Kaiser Bottom Fish OnlineFree trialNew StuffHow It WorksContact UsTerms of UseHome
Specializing in Canadian Stocks
SearchAdvanced Search
Welcome Guest User   (more...)
Home / Education
Education
 

SDLRC - Coesite


The Sheahan Diamond Literature Reference Compilation - Scientific and Media Articles based on Major Keyword - Coesite
The Sheahan Diamond Literature Reference Compilation is compiled by Patricia Sheahan who publishes on a monthly basis a list of new scientific articles related to diamonds as well as media coverage and corporate announcements called the Sheahan Diamond Literature Service that is distributed as a free pdf to a list of followers. Pat has kindly agreed to allow her work to be made available as an online digital resource at Kaiser Research Online so that a broader community interested in diamonds and related geology can benefit. The references are for personal use information purposes only; when available a link is provided to an online location where the full article can be accessed or purchased directly. Reproduction of this compilation in part or in whole without permission from the Sheahan Diamond Literature Service is strictly prohibited. Return to Diamond Keyword Index
Sheahan Diamond Literature Reference Compilation - Scientific Articles by Author for all years
A-An Ao+ B-Bd Be-Bk Bl-Bq Br+ C-Cg Ch-Ck Cl+ D-Dd De-Dn Do+ E F-Fn Fo+ G-Gh Gi-Gq Gr+ H-Hd He-Hn Ho+ I J K-Kg Kh-Kn Ko-Kq Kr+ L-Lh
Li+ M-Maq Mar-Mc Md-Mn Mo+ N O P-Pd Pe-Pn Po+ Q R-Rh Ri-Rn Ro+ S-Sd Se-Sh Si-Sm Sn-Ss St+ T-Th Ti+ U V W-Wg Wh+ X Y Z
Sheahan Diamond Literature Reference Compilation - Media/Corporate References by Name for all years
A B C D-Diam Diamonds Diamr+ E F G H I J K L M N O P Q R S T U V W X Y Z
Each article reference in the SDLRC is tagged with one or more key words assigned by Pat Sheahan to highlight the main topics of the article. In an effort to make it easier for users to track down articles related to a specific topic, KRO has extracted these key words and developed a list of major key words presented in this Key Word Index to which individual key words used in the article reference have been assigned. In most of the individual Key Word Reports the references are in crhonological order, though in some such as Deposits the order is first by key word and then chronological. Only articles classified as "technical" (mainly scientific journal articles) and "media" (independent media articles) are included in the Key Word Index. References that were added in the most recent monthly update are highlighted in yellow.

Coesite is a form of silicon dioxide formed under ultra high pressure and temperature conditions (greater than 2.5 GPa and 700 degrees C which occurs at a depth of 70 km). It has been found in meteor impact craters and as eclogitic xenoliths in kimberlites. Eclogite evolves through the metamorphism created by subduction and continental collisions. Eclogitic diamonds are distinguished from peridotitic diamonds by including a greater range of carbon isotopes, including C13 which is never present in peridotitic diamonds whose carbon source was never exposed to sunlight whose radiation is critical to the C13 isotope. Peridotitic diamonds are Archean aged, whereas eclogitic diamonds can be younger. Articles about coesite are relevant to diamonds because coesite occurs in eclogitic xenoliths that are the source rocks for eclogitic diamonds.

Coesite
Posted/
Published
AuthorTitleSourceRegionKeywords
DS1985-0390
1985
Leung, I.S.Unusual Inclusions Found in a Natural DiamondGeological Society of America (GSA), Vol. 17, No. 7, P. 642-3. (abstract.).GlobalDiamond Genesis, Garnet, Coesite, Biotite, Apatite
DS1988-0616
1988
Schulze, D.J., Helmstaedt, H.Coesite-sanidine eclogites from kimberlite: products of mantle fractionation or subduction?Journal of Geology, Vol. 96, No. 4, pp. 435-443South AfricaEclogite, Coesite
DS1989-0052
1989
Babich, Yu.V., Doroshev, A.M., Malinovskii, I.Yu.Heat-activated transformation of coesite at standard pressureSoviet Geology and Geophysics, Vol. 30, No. 2, pp. 140-146RussiaCoesite, Mineralogy
DS1989-1359
1989
Schulze, D.J.The eclogite component of the subcontinentallithosphere: observations bearing on its origin andabundanceLpi Technical Report, No. 89-05, pp. 79-81South Africa, RussiaEclogite, Coesite
DS1990-0765
1990
Jing, Y., Pan, G., Xia, M., Wang, X., Liou, J.G., Maruyama, S.Petrology of coesite bearing eclogites from the Dabie Mountains CentralChinaInternational Mineralogical Association Meeting Held June, 1990 Beijing China, Vol. 2, extended abstract p. 864-865ChinaEclogites, Coesite
DS1990-1122
1990
Novogordov, P.G., Bulanova, G.P., Pavlova, L.A., et al.Inclusions of potassium phases, coesite and omphacitein a coated diamond crystal from the Mir pipeDoklady Academy of Sciences Nauk. SSSR, (Russian), Vol. 310, No. 2, pp. 439-443RussiaDiamond morphology, Coesite
DS1990-1260
1990
Rossman, G.R., Smyth, J.R.Hydroxyl contents of accessory minerals in mantle eclogites and relatedrocksAmerican Mineralogist, Vol. 75, No. 7-8, July-August pp. 775-780South AfricaAlkremite, coesite, Infrared spectra
DS1990-1284
1990
Ru-Yuan Zhang, Cong, Bo-LinCoesite eclogite in Su-Lu region, eastern ChinaEos, Vol. 71, No. 43, October 23, p. 1708 AbstractChinaEclogite, Coesite
DS1990-1285
1990
Ruyuan Zhang, Hirajima, T., Banno, S., Ishiwatari, A., Jiaju Li, BolinCoesite -eclogite from Donghai area, Jiangsu Province in ChinaInternational Mineralogical Association Meeting Held June, 1990 Beijing China, Vol. 2, extended abstract p. 923-924ChinaEclogite, Coesite
DS1990-1317
1990
Schreyer, W., Tilton, G.R., Schertl, H.P.Toward a P-T time path for the pyrope-coesite rocks of the Dora Mairamassif, western AlpsTerra, Abstracts of Crustal Dynamics: Pathways and Records held Bochum FRG, Vol. 2, December p. 32AlpsCoesite, Petrology
DS1990-1538
1990
Wang Xiaomin, Liou, J.G.Coesite in eclogites from the Dabie Mountains, central China; the first occurrence of coesite in ChinaInternational Mineralogical Association Meeting Held June, 1990 Beijing China, Vol. 2, extended abstract p. 900-902ChinaEclogites, Coesite
DS1990-1539
1990
Wang, X., Liou, J.G.Coesite bearing eclogites from the Dabie Mountains central China:petrogenesis and P-T pathGeological Society of America (GSA) Annual Meeting, Abstracts, Vol. 22, No. 7, p. A31ChinaCoesite, Eclogites
DS1991-0742
1991
Hsu, K.J.Exhumation of high pressure metamorphic rocksGeology, Vol. 19, No. 2, February pp. 107-110California, Europe, ChinaEclogites, Coesite
DS1991-1067
1991
Martini, J.E.J.The nature, distribution and genesis of coesite and stishovite associated with the pseudotachylite of the Vredefort Dome, South AfricaEarth and Planetary Science Letters, Vol. 103, No. 1-4, April pp. 285-300South AfricaCoesite, Mineralogy
DS1991-1243
1991
Novgorodov, P.G., Bulanova, G.P., Pavlova, L.A., Mikhaylov, V.N.Inclusions of potassic phases coesite and omphacite in a coated diamondDoklady Academy of Sciences USSR Earth Science Scetion, Vol. 310, No. 1-6, September pp. 147-150RussiaDiamond morphology, Coesite, omphacite
DS1991-1513
1991
Schertl, H.P., Schreyer, W., Chopin, C.The pyrope-coesite rocks and their country rocks at Parigi, Dora MairaMassif, western Alps, detailed petrography, mineral chemistry and PT pathContributions to Mineralogy and Petrology, Vol. 108, No. 1-2, pp. 1-21ItalyMineralogy, Coesite
DS1991-1620
1991
Smythe, J.R., McCormick, T.C., Caporuscio, F.A.Pyroxene crystal chemistry and the evolution of eclogites in the mantleProceedings of Fifth International Kimberlite Conference held Araxa June 1991, Servico Geologico do Brasil (CPRM) Special, pp. 385-387South AfricaCoesite, grospydite, Mineral chemistry
DS1991-1625
1991
Sobolev, N.V., Shatskiy, V.S., Vavilov, M.A., Goryainov, S.V.Coesite inclusion in zircon from diamond containing gneisses of KokchetavMassif- lst find of coesite in metamorphic rocks of the USSR. (Russian)Doklady Academy of Sciences Akademy Nauk SSSR, (Russian), Vol. 321, No. 1, pp. 184-188. # hb124RussiaCoesite, Metamorphic rocks
DS1991-1647
1991
Spetsius, Z.V.Megaxenolith of coesite eclogite from the Udachnaya kimberlite pipeDoklady Academy of Sciences USSR Earth Sci. Section, Vol. 313, No. 1, pp. 187-190Russia, YakutiaCoesite, eclogite, Deposit -Udachnaya
DS1991-1829
1991
Wang Xiaomin, Liou, J.G.Ultramafic rocks from the Dabie ultrahigh pressure coesite bearing metamorphic terrane and implications to regional geology in central ChinaGeological Society of America Annual Meeting Abstract Volume, Vol. 23, No. 5, San Diego, p. A 444ChinaCoesite, Ultramafic
DS1991-1899
1991
Xiaomin Wang, Liou, J.G.Regional ultrahigh pressure coesite bearing eclogite terrane in centralChina: evidence form country rocks, gneiss, marble and metapeliteGeology, Vol. 19, No. 9, September pp. 933-936ChinaCoesite, Eclogite
DS1991-1920
1991
Zarharchenko, O.D., Kharkiv, A.D., Botova, M.M., Makhin, A.I.Inclusions of plutonic minerals in diamonds from kimberlite rocks of the northern east European PlatformProceedings of Fifth International Kimberlite Conference held Araxa June 1991, Servico Geologico do Brasil (CPRM) Special, pp. 579-580RussiaDiamond inclusions, Olivine, coesite, chrome-spinellid
DS1991-1927
1991
Zhang RuayanUltra high pressure metamorphism and retrograde reaction of coesite bearing quartz eclogite from Weihai, eastern ChinaEos Transactions, Vol. 72, No. 44, October 29, abstract p. 559ChinaCoesite, Eclogite
DS1992-1135
1992
Okay, A.I., Sengor, A.M.C.Evidence for intracontinental thrust related exhumation of ultra high pressure rocks in ChinaGeology, Vol. 20, No. 5, May pp. 411-414ChinaCoesite, Diamond bearing metamorphic rocks
DS1992-1267
1992
Reimold, W.U., Colliston, W.P., Wallmach, T.Comment on the nature, distribution and genesis of the coesite and stishovite associated with the pseudotachylite of the Vredefort Dome, SouthAfricaEarth and Planetary Science Letters, Vol. 112, pp. 213-217South AfricaMineralogy, Coesite
DS1992-1317
1992
Ruyuan Zhang et al.Petrogenesis of coesite bearing eclogites in the Su-Lu ultrahigh pressure metamorphic terrain, eastern ChinaProceedings of the 29th International Geological Congress. Held Japan August 1992, Vol. 2, abstract p. 603ChinaCoesite, Eclogite
DS1992-1649
1992
Wengyuan Cui et al.Coesite bearing eclogites in Dabie Mountains. North Jiangsu and South Shandong Provinces of ChinaProceedings of the 29th International Geological Congress. Held Japan August 1992, Vol. 2, abstract p. 601ChinaEclogites, Coesite
DS1992-1704
1992
Xu Shutong, Jiang Laili, Liu Yican, Zhang YongTectonic framework and evolution of the Dabie Mountains in Anhui, EasternChina.Acta Geologica Sinica, Vol. 5, No. 3, September pp. 221-238.ChinaTectonics, Coesite, diamonds
DS1993-1222
1993
Perchuk, A.L.Excess pressure in garnet from eclogite, as derived from the reaction Ab=Jd+ quartz.Doklady Academy of Sciences USSR, Earth Science Section, Vol. 316, No. 5, pp. 157-161.NorwayEclogite, Coesite
DS1993-1782
1993
Xiaomin Wang, Liou, J.G.Ultra high pressure metamorphism of carbonate rocks in the Dabie central China.Journal of Metamorphic Geology, Vol. 11, pp. 575-588.ChinaCoesite, metamorphism
DS1994-0240
1994
Caby, R.Precambrian coesite from Mali: first record and implications for plate tectonics trans-Saharan segment.European Journal of Mineralogy, Vol. 6, pp. 235-244.GlobalMineralogy, Coesite
DS1994-0241
1994
Caby, R.Precambrian coesite from northern Mali: first record and implications for plate tectonics in the Trans-Saharan segment of the Pan African belt.European Journal of Mineralogy, Vol. 6, pp. 235-244.GlobalTectonics, Coesite
DS1994-1539
1994
Schertl, H.P., Okay, A.I.A coesite inclusion in dolomite from Dabie Shan, China: petrological and rheological significance.European Journal of Mineralogy, No. 6, pp. 995-1000.ChinaCoesite, mineralogy, Deposit -Dabie Shan area
DS1994-1656
1994
Sobolev, N.V., Shatskiy, V.S., Vavilov, MM.A., GoryainoZirconium from metamorphic rocks of folded regions a unique container of inclusions diamond, coesite (Russian)Doklady Academy of Sciences Nauk.(Russian), Vol. 334, No. 4, Feb. pp. 488-492.RussiaMetamorphic rocks, Coesite
DS1994-1657
1994
Sobolev, N.V., Shatsky, V.S., Vavilov, M.A., Goryaynov, S.A coesite inclusion in zircon from diamond containing gneiss of Kokchetav:first find coesite in metamorphic rocks of the USSRDoklady Academy of Sciences USSR, Earth Science Section, Vol. 322, No. 1, pp. 123-127.RussiaDiamond inclusions, Coesite
DS1994-1983
1994
Zhang, R.Y., Liou, J.G.Significance of magnesite paragenesis in ultra high pressure metamorphic rocks.American Mineralogist, Vol. 79, pp. 397-400.Chinaultra high pressure (UHP), coesite, microdiamond, Dabie
DS1994-1984
1994
Zhang, R.Y., Liou, J.G.Significane of magnesite paragenesis in ultra high pressure metamorphic rocks.American Mineralogist, Vol. 79, pp. 397-400.Chinaultra high pressure (UHP), coesite, microdiamond, Dabie
DS1994-1986
1994
Zhang, Ru-Yuan, Liou, J.G.Coesite bearing eclogite in Henan Province, central China: detailedpetrography, glaucophane stability and PT path.European Journal of Mineralogy, Vol. 6, pp. 217-233.ChinaEclogite, Mineralogy, Coesite
DS1995-0167
1995
Bohlen, S.R., Mosenfelder, J.L.The coesite to quartz transformation: nature vs experimentEos, Vol. 76, No. 46, Nov. 7. p.F531. Abstract.GlobalCoesite, Petrology -experimental
DS1995-0336
1995
Coleman, R.G., Wang, X.Ultrahigh pressure metamorphismCambridge University of Press, 528p. approx. 80. United StatesGlobalMetamorphism - ultra high pressure metamorphic., Diamonds, coesite
DS1995-0424
1995
Dobretsov, N.I., Shatsky, V.S., Sobolev, N.V.Comparison of the Kokchetav and Dabie Shan metamorphic complexes: coesite and diamond bearing rocks ultra high pressure (UHP)-HP...International Geology Review, Vol. 37, pp. 636-656.ChinaCoesite, metamorphism, Deposit -Kokchetav, Dabie Shan
DS1995-0513
1995
Ernst, W.G., Liou, J.G., Coleman, R.G.Comparative petrotectonic study of five Eurasian ultrahigh pressure metamorphic complexes.International Geology Review, Vol. 37, pp. 191-211.China, Kazakhstan, Russia, Alps, NorwayDabie Sulu, Kochetetav, Maksyutov, Dora Maira, Coesite, diamond
DS1995-0710
1995
Hacker, B.R.What brought them up? Exhumation of ultrahigh pressure rocks in the Dabie Mountains of eastern China.Eos, Abstracts, Vol. 76, No. 17, Apr 25, p. S 283.ChinaCoesite, diamonds, metamorphic, Deposit -Dabie Mountains
DS1995-0712
1995
Hacker, B.R., Ratschbacher, L., Webb, L., Shuwen, D.What brought them up? Exhumation of the Dabie Shan ultrahigh pressurerocks.Geology, Vol. 23, No. 8, August pp. 743-746.ChinaCoesite, diamond, Deposit -Dabie Shan area
DS1995-0865
1995
Jahn, B.M.NCB-SCB: geochemical and isotopic constraints of coesite bearing eclogites from Sulu and Dabie MtnsTerra Nova, Abstract Vol., p. 339.ChinaCoesite, Eclogite
DS1995-1493
1995
Phillipot, P.Fluid composition and evolution in coesite bearing rocks Dora Maire Massif:recycling during subduction.Contributions to Mineralogy and Petrology, Vol. 121, No. 1, pp. 29-44.GlobalCoesite, Subduction
DS1995-1510
1995
Polyakov, G.V., Trong Yem, N., et al.Geology and substance composition of the cocites of North VietnamProceedings of the Sixth International Kimberlite Conference Abstracts, pp. 449-451.GlobalUltrapotassic, alkaline, Coesites
DS1995-1669
1995
Schertl, H.P., Okay, A.I.A coesite inclusion in dolomite in Dabie Shan, China: petrological and rheological significance.European Journal of Mineralogy, Vol. 6, No. 6, Nov. 1, pp. 995-1006.ChinaCoesite, Deposit - Dabie Shan area
DS1995-1781
1995
Smith, D.C.Microcoesites and microdiamonds in Norway: an overviewCambridge University of Press, pp. 299-355.NorwayCoesites, Microdiamonds
DS1995-1793
1995
Sobolev, N.V., Shatskiy, V.S., Vavilov, GoryaynovZircon in high pressure metamorphic rocks in folded regions as a unique container of inclusions.....Doklady Academy of Sciences, Vol. 336, No. 4, Nov., pp. 79-85.Russia, Kokchetau MassifCoesite, diamond, Inclusions
DS1995-2134
1995
Zhang, R.Y., Liou, J.G.Significance of coesite inclusions in dolomite from eclogite in the southern Dabie Mountains China.Geological Society of America (GSA) Abstracts, Vol. 27, No. 6, abstract p. A 264.ChinaMetamorphism, Coesite, Deposit -Dabie Mountains
DS1996-0262
1996
Chavagnac, V., Jahn, B-m.Coesite bearing eclogites from the Bixiling Complex, Dabie Mountains, China: Sm neodymium ages, geochemical....Chemical Geology, Vol. 133, pp. 29-51.ChinaEclogites, coesites, Deposit -Dabie Mountains
DS1996-0851
1996
Liou, J.G., Zhang, R.Y.Occurrences of intergranular coesite in ultrahigh pressure rocks Sulu region: lackof fluid during exhumation.American Mineralogist, Vol. 81, Sept-Oct., pp. 1217-1221.ChinaCoesite, Sulu region
DS1996-0997
1996
Mosenfelder, J.L., Bohlen, S.R.The quartz coesite transition revisited: revisitedGeological Society of America, Abstracts, Vol. 28, No. 7, p. A-159.GlobalCoesite
DS1996-1128
1996
Polyakov, G.V., et al.Ultrapotassic basic rocks of Northern Vietnam -cocites in relation to The problem of lamproitic magmatismInternational Geological Congress 30th Session Beijing, Abstracts, Vol. 2, p. 390.GlobalLamproites, Coesites
DS1996-1221
1996
Rumble, D., Zhang, R., et al.The Qinglongshan oxygen isotope anomaly in coesite-facies eclogites of Eastern China.Geological Society of America, Abstracts, Vol. 28, No. 7, p. A-249.ChinaGeochronology, Coesite
DS1996-1525
1996
Wen, S., Shutong, X., Yican, L.Coesite from quartz jadeiite in the Dabie Mountains, eastern ChinaMineralogical Magazine, Vol. 60, No. 4, Aug. 1, pp. 659-662.ChinaMineralogy, Coesite
DS1996-1526
1996
Wen, Su, Shutong, Xu, Laili, J., Yican, LiuCoesite from quartz jadeitite in the Dabie Mountains, eastern ChinaMineralogical Magazine, Vol. 60, pp. 659-662.ChinaCoesite
DS1997-1219
1997
Wain, A.New evidence for coesite in eclogite and gneisses: defining an ultrahigh pressure province Western Gneiss.Geology, Vol. 25, No. 10, Oct., pp. 927-930.Norwaymetamorphism, Coesite
DS1997-1299
1997
Zhang, R.Y., Liou, J.G.Partial transformation of gabbro to coesite bearing eclogite from the Su Lu terrane eastern China.Journal of Met. Geology, Vol. 15, No. 2, Mar. 1, pp. 183-202.ChinaEclogites, Coesite
DS1998-0064
1998
Babich, Yu.V., Turkin, A.I., Gusak, S.N.Pecularities of high pressure coesite quartz transformation in presence of water and carbon dioxideRussian Geology and Geophysics, Vol. 39, No. 5, pp. 694-8.GlobalCoesite, Mineralogy
DS1998-0791
1998
Korsakov, A.V., Shatsky, V.S., Sobolev, N.V.The first finding of coesite in the eclogites of the Kokchetav MassifDoklady Academy of Sciences, Vol. 360, No. 4, pp. 469-73.RussiaEclogites, Coesite
DS2000-0723
2000
O'Brien, P.J.ultra high pressure (UHP) metamorphism - prospecting for potential coesite bearing terranes with alternative geothermobarometric..Igc 30th. Brasil, Aug. abstract only 1p.NorwayCoesites
DS2000-0748
2000
Parkinson, C.D., Katayama, I.Over pressured coesite inclusions in zircon and garnet: evidence from laser Raman microspectroscopy.Igc 30th. Brasil, Aug. abstract only 1p.Russia, Kazakhstan, Indonesia, ChinaCoesites
DS2000-1048
2000
Zhang, R.Y., Liou, J.G.Retrograde hydration of Shuanghe ultrahigh - P rocks from the Dabie Terrane central Chin a during exhumation.Geological Society of America (GSA) Abstracts, Vol. 32, No. 7, p.A-114.ChinaCoesites, Dabie Shan area
DS2001-0350
2001
Fursenko, B.A., Goryainov, S.V., Sobolev, N.V.high pressure coesite inclusions in diamond: Raman spectroscopyDoklady Academy of Sciences, Vol. 379A, No. 6, July-August pp. 749-51.GlobalCoesite, Diamond - inclusions
DS2001-0736
2001
Massonne, H.J.First find of coesite in the ultrahigh pressure metamorphic area of the central Erzgebirge.European Journal of Mineralogy, Vol. 13, No. 3, pp. 565-70.Germanyultra high pressure (UHP), Coesite
DS2001-0811
2001
Mposkos, E.D., Kostopoulos, D.K.Diamond, former coesite and supercilicic garnet in metasedimentary rocks from Greek Rhodope: ultra high pressure (UHP) provinceEarth and Planetary Science Letters, Vol. 192, No. 4, pp. 497-506.GreeceCoesite, Ultra high pressure metamorphic
DS2001-0847
2001
O'Brien, P.J., Zotov, N., Law, R., Khan, M.A., Jan. M.Coesite in Himalayan eclogite and implications for models of India Asia collision.Geology, Vol. 29, No. 5, May, pp. 435-8.GlobalEclogite, coesite, metamorphism
DS2002-0360
2002
Dawer, M., Xiuling, W., Yujing, H., Xin, M.Ultra structure of coesite - retrogressive metamorphic quartz and their interface transition belt from ultra high pressure metamorphic rocks.18th. International Mineralogical Association Sept. 1-6, Edinburgh, abstract p.72.MantleUHP, mineralogy, coesite
DS2002-0575
2002
Gilotti, J.A., Krogh Ravna, E.J.First evidence for ultrahigh pressure metamorphism in the north east Greenland Caledonides.Geology, Vol. 30,6, June,pp. 551-4.GreenlandEclogite, coesite, pseudomorph, UHP
DS2002-1298
2002
Ragozin, A.L., Shatsky, V.S., Tylov, G.M., Goryainov, S.V.Coesite inclusions in rounded diamonds from placers of the northeastern Siberian Platform.Doklady, Vol.384,4, May-June, pp. 385-9.Russia, SiberiaAlluvials, Diamond - inclusions, coesite
DS2003-0221
2003
Carswell, D.A., Tucker, R.D., O'Brien, P.J., Krogh, T.E.Coesite micro-inclusions and the U Pb age of zircons from the Hariedland eclogite inLithos, Vol. 67, 3-4, April pp. 181-190.NorwayCoesite
DS2003-0882
2003
Maruyama, S., Helmstaedt, H.Fate of the subducted Farallon plate referred from eclogite xenoliths in the ColoradoGeology, Vol. 31, 7, July pp. 589-92.Colorado PlateauCoesite, zircon, geochronology
DS2003-0981
2003
Mosenfelder, J.Fluid infiltration and the preservation of coesiteGeological Society of America, Annual Meeting Nov. 2-5, Abstracts p.225.MantleCoesite
DS200412-1237
2003
Maruyama, S., Helmstaedt, H.Fate of the subducted Farallon plate referred from eclogite xenoliths in the Colorado Plateau.Geology, Vol. 31, 7, July pp. 589-92.United States, ColoradoCoesite, zircon, geochronology
DS200412-1374
2003
Mosenfelder, J.Fluid infiltration and the preservation of coesite.Geological Society of America, Annual Meeting Nov. 2-5, Abstracts p.225.MantleCoesite
DS200412-1886
2004
Spetsius, Z.V.Petrology of highly aluminous xenoliths from kimberlites of Yakutia.Lithos, Vol. 77, 1-4, Sept. pp. 525-538.Russia, YakutiaEclogite, kyanite, coesite, lithosphere, Udachnaya, Zag
DS200512-1183
2005
Williams, Q., Revenaugh, J.Ancient subduction, mantle eclogite and the 300 km seismic discontinuity.Geology, Vol. 33, 1, Jan. pp. 1-4.MantleEclogite, subduction, coesite
DS200612-0510
2006
Guirand, M., Powell, R.P V T relationships and mineral equilibration temperatures in inclusions in minerals.Earth and Planetary Science Letters, Vol. 244, 3-4, Apr.30, pp. 683-694.TechnologyDiamond, coesite, mineral inclusions
DS200612-0828
2006
Liu, J., Ye, K., Sun, M.Exhumation P T path of UHP eclogites in the Hong'an area, western Dabie Mountains, China.Lithos, Vol. 89, 1-2, June pp. 154-173.ChinaUHP, coesites
DS200612-0886
2006
McClelland, W.C., Power, S.E., Gilotti, J.A., Mazdab, F.K., Wopenka, B.U Pb SHRIMP geochronology and trace element geochemistry of coesite bearing zirocons, north east Greenland Caledonides.Geological Society of America, Special Paper, No. 403, pp. 23-44.Europe, GreenlandCoesite
DS200612-1455
2006
Usui, T., Kobayashi, K., Nakamura, E., Helmstaedt, H.Trace element fractionation in deep subduction zones inferred from a lawsonite eclogite xenolith from the Colorado Plateau.Chemical Geology, in press available,United States, Colorado PlateauEclogite, subduction, Farallon plate, coesite
DS200812-0811
2008
O'Brien, P.J., Ziemann, M.A.Preservation of coesite in exhumed eclogite: insights from Raman mapping.European Journal of Mineralogy, Vol. 20, 5, pp. 827-834.MantleCoesite
DS200812-0833
2008
Ota, T., Kobayashi, K., Kunihiro, T., Nakamura, E.Boron cycling by subducted lithosphere, insights from Diamondiferous tourmaline from the Kochetav ultrahigh pressure metamorphic belt.Geochimica et Cosmochimica Acta, Vol. 72, 14, pp. 3531-3541.Russia, KazakhstanCoesite, UHP
DS200812-1015
2008
Schertl, H-P., Schreyer, W.Geochemistry of coesite bearing pyrope quartzite and related rocks from the Dora Massif Western Alps.European Journal of Mineralogy, Vol. 20, 5, pp. 791-809.EuropeCoesite
DS201012-0407
2010
Korsakov, A.V., Zhukov, V.P., Vandenabeele, P.Raman based geobarometry of ultrahigh pressure metamorphic rocks: applications, problems and perspectives.Analytical and Bioanalytical Chemistry, Vol. 397, 7, pp. 1618-2641-50.TechnologyCoesite
DS201212-0099
2012
Butler, J.P., Jamieson, R.A., Steenkamp, H.M., Robinson, P.Discovery of coesite eclogite from the Nordyane UHP domain, Western Gneiss region, Norway: field relations, metamorphic history and tectonic significance.Journal of Metamorphic Geology, in press availableEurope, NorwayCoesite
DS201312-0311
2013
Gilotti, J.Continental crust at mantle depths.Elements, Vol. 9, 4, pp. 255-260.MantleCoesite
DS201312-0842
2013
Smith, D.C., Godard, G.A raman spectrroscopic study of diamond and disordered sp3 carbon in the coesite bearing Starumen eclogite pod, Norway.Journal of Metamorphic Geology, Vol. 31, pp. 19-33.Europe, NorwayCoesite
DS201312-0843
2013
Smith, D.C., Godard, G.A Raman spectroscopic study of diamond and disordered sp3-carbon in the coesite bearing Straumen eclogite pod.Journal of Metamorphic Geology, Vol. 31, 1, pp. 19-33.Europe, NorwayCoesite
DS201412-0382
2014
Huang, M-X., Yang, J-J., Powell, R., Mo, X.High pressure metamorphism of serpentinzed chromitite at Luobusha ( southern Tibet).American Journal of Science, Vol. 314, pp. 400-433.Asia, TibetDiamond and coesite
DS201412-0677
2014
Perraki, M., Faryad, S.W.First finding of microdiamond, coesite and other UHP phases in felsic granulites in the Moldanubian Zone: implications for deep subduction and a revised geodynamic model for Variscan Orogeny in the Bohemian Massif.Lithos, Vol. 202-203, pp. 157-166.EuropeCoesite, UHP
DS201502-0051
2015
Chen, T., Gwanmesia, G.D., Wang, X., Zou, Y., Liebermann, R.C., Michaut, C., Li, B.Anomalous elastic properties of coesite at high pressure and implications for the upper mantle X-discontinuity.Earth and Planetary Science Letters, Vol. 412, pp. 42-51.MantleCoesite

Abstract: Compressional and shear wave velocities of coesite have been measured using ultrasonic interferometry in a multi-anvil apparatus up to 12.6 GPa at room temperature for the first time. While the P wave velocity increases continuously with pressure, the S wave exhibits an anomalous softening and the velocity decreases continuously with pressure. Finite strain analysis of the data yielded KS0=103.6(4) GPaKS0=103.6(4) GPa, G0=61.6(2) GPaG0=61.6(2) GPa and View the MathML sourceK0?=2.9(1), View the MathML sourceG0?=0.3(1) for the bulk and shear moduli and their pressure derivatives, respectively. The anomalous elastic behavior of coesite results in large velocity and impedance contrasts across the coesite–stishovite transition, reaching ?39% and ?48% for P and S wave velocity contrasts, and ?70% and 78% for P and S wave impedance contrasts, respectively, at pressure ?8 GPa, with P and S wave velocity perturbations showing no apparent dependence on depths (i.e., View the MathML sourcedln?V(PorS)/dh?0) within 8–12 GPa. These unusually large contrasts and depth independent characteristics render the transition between the two silica polymorphs one of the most plausible candidates for the cause of the seismically observed X-discontinuity. The current P and S wave velocity perturbation dependences on the SiO2 content, d(ln?VP)/d(SiO2)?0.43 (wt%)?1d(ln?VP)/d(SiO2)?0.43 (wt%)?1 and d(ln?VS)/d(SiO2)?0.60 (wt%)?1d(ln?VS)/d(SiO2)?0.60 (wt%)?1, can serve as a geophysical probe to track ancient subducted eclogite materials to gain insights on the geodynamics of the mantle.
DS201607-1301
2016
Hart, E., Storey, C., Bruand, E., Schertl, H-P., Alexander, B.D.Mineral inclusions in rutile: a novel recorder of HP-UHP.Earth and Planetary Science Letters, Vol. 446, pp. 137-148.MantleCoesite, subduction

Abstract: The ability to accurately constrain the secular record of high- and ultra-high pressure metamorphism on Earth is potentially hampered as these rocks are metastable and prone to retrogression, particularly during exhumation. Rutile is among the most widespread and best preserved minerals in high- and ultra-high pressure rocks and a hitherto untested approach is to use mineral inclusions within rutile to record such conditions. In this study, rutiles from three different high- and ultrahigh-pressure massifs have been investigated for inclusions. Rutile is shown to contain inclusions of high-pressure minerals such as omphacite, garnet and high silica phengite, as well as diagnostic ultrahigh-pressure minerals, including the first reported occurrence of exceptionally preserved monomineralic coesite in rutile from the Dora -Maira massif. Chemical comparison of inclusion and matrix phases show that inclusions generally represent peak metamorphic assemblages; although rare prograde phases such as titanite, omphacite and corundum have also been identified implying that rutile grows continuously during prograde burial and traps mineralogic evidence of this evolution. Pressure estimates obtained from mineral inclusions, when used in conjunction with Zr-in-rutile thermometry, can provide additional constraints on the metamorphic conditions of the host rock. This study demonstrates that rutile is an excellent repository for high- and ultra-high pressure minerals and that the study of mineral inclusions in rutile may profoundly change the way we investigate and recover evidence of such events in both detrital populations and partially retrogressed samples.
DS201704-0635
2017
Liu, P., Massonne, H-J., Zhang, J., Wu, Y., Jin, Z.Intergranular coesite inclusions in dolomite from the Dabie Shan: constraints on the preservation of coesite in UHP rocks.Terra Nova, in press availableChinaCoesite

Abstract: Intergranular coesite is extremely rare in, and bears crucial information on the formation and preservation of, ultrahigh-pressure (UHP) rocks. Here, we report the first occurrence of intergranular coesite in a metasedimentary rock, which occurs in the Ganjialing area in the Dabie Shan, east-central China, and contains abundant coesite inclusions in both garnet and dolomite. We investigated the content of structural water in these minerals with Fourier transform infrared spectroscopy. Our new results undermine the ubiquity of the “pressure-vessel” model and highlight the role of reaction kinetics in preserving coesite due to the availability of water in UHP rocks.
DS201807-1494
2018
Gose, J., Schmadicke, E.Water in corporation in garnet: coesite versus quartz ecologite from Erzgebirge and Fichtelbirge.Journal of Petrology, Vol. 59, 2, pp. 207-232.Europe, Germanycoesite
DS201809-2022
2018
Frigo, C., Stalder, R., Ludwig, T.OH defects in coesite and stishovite during ultrahigh-pressure metamorphism of continental crust. Dora Maira, Kochetav massifsPhysics and Chemistry of Minerals, dor.org/10.1007/ d00269-018-0987-5 13p.Russia, Kazakhstan, Alpscoesite, UHP

Abstract: The high-pressure silica polymorphs coesite and stishovite were synthesized under water-saturated conditions from a natural granitic composition doped with Li and B. Experiments were performed in a Multi-Anvil apparatus between 4 and 9.1 GPa and 900 and 950 °C, based on the conditions of a subducting continental crust as realistic for the ultrahigh-pressure metamorphic units Dora Maira and Kochetav massifs. Run products consisted of coesite/stishovite?+?kyanite?±?phengite?±?omphacite, and quench material. The synthesized silica polymorphs were successively analyzed by infrared spectroscopy, electron microprobe, and Secondary-Ion Mass Spectrometry (SIMS). No hydrous defects were observed in coesite synthesized at 4 GPa and 900 °C, whereas coesite grown at higher pressures revealed a triplet of infrared absorptions bands at 3575, 3523, and 3459 cm??1, two minor bands at 3535 and 3502 cm??1, and a small band at 3300 cm??1 that was only visible at 7.7 GPa. The total amount of Al was charge-balanced by H and the other monovalent cations. However, the band triplet could not be associated with AlOH defects, while the band doublet was inferred to BOH defects and the small band probably corresponded to interstitial H. Stishovite displayed one dominant band at 3116 cm??1 with a shoulder at 3170 cm??1, and a minor band at 2665 cm??1, probably all associated with AlOH defects. BOH defects were not observed in stishovite, and LiOH defects were neither observed in coesite nor stishovite, probably because of preferentially partition of Li in other phases such as omphacite. The total amount of defect protons increased with pressure and with metal impurity concentrations. The general increase in OH defects in silica polymorphs with increasing pressure (this study) contrasted the negative pressure trend of OH in quartz observed previously from the same starting material, and revealed an incorporation minimum of OH in silica polymorphs around the quartz/coesite phase transition.
DS201811-2591
2018
Liu, P., Zhang, J., Massonne, H-J., Jin, Z.Polyphase solid-inclusions formed by interactions between infiltrating fluids and precursor minerals enclosed in garnet of UHP rocks from the Dabie Shan, China.American Mineralogist, Vol. 103, pp. 1663-1673.Chinacoesite

Abstract: Three types of polyphase solid-inclusions (PSIs) with distinct mineral assemblages and micro-structures were found in garnet of an ultrahigh-pressure (UHP) eclogite-vein system from the Dabie Shan, east-central China. Type-1 PSI contains variable volumes of quartz, K-feldspar, plagioclase ± other phases, whereas Type-2 PSI contains variable volumes of quartz, calcite ± other phases. Both types display shapes that are compatible with those of euhedral coesite inclusions. Type-3 PSI always contains a rutile core that is surrounded by plagioclase ± quartz and generally displays the morphology of the rutile core. Variable amounts of K-feldspar are embedded within the plagioclase of Type-3 PSIs. The three PSI types developed fluid-mediated microstructures that include wedge-like offshoot and protrusion textures and inclusion-garnet interfaces controlled by the crystallographic structure of garnet. PSIs in peak minerals of UHP rocks have been previously thought to represent primary supercritical fluid or melt inclusions. Here we propose that the studied PSIs were formed under high-pressure (HP) eclogite-facies conditions during exhumation and represent reaction products between an enclosed mineral, such as coesite and rutile, and external fluids infiltrating the host garnet along fractures that have been healed later on. Two immiscible aqueous fluids (i.e., a siliceous and a carbonaceous) were involved in the formation of these PSIs. The siliceous fluid was rich in various large ion lithophile elements like Cs, Rb, Ba, K, Pb, Li, and Sr, whereas the carbonaceous fluid was rich in Pb and Sr. The new PSI formation mechanism proposed in this study brings significant implications for tracing fluid evolution and post-entrapment modifications of mineral inclusions in HP and UHP metamorphic rocks.
DS201902-0326
2019
Taguchi,T., Igami, Y., Miyake, A., Masake, E.Factors affecting preservation of coesite in ultrahigh-pressure metamorphic rocks: insights from TEM observations of dislocations within kyanite Sulu China.Journal of Metamorphic Geology, https://doi.org/10.1111/jmg.12470Chinacoesite

Abstract: To understand the preservation of coesite inclusions in ultrahigh?pressure (UHP) metamorphic rocks, an integrated petrological, Raman spectroscopic and focused ion beam (FIB) system-transmission electron microscope (TEM) study was performed on a UHP kyanite eclogite from the Sulu belt in eastern China. Coesite grains have been observed only as rare inclusions in kyanite from the outer segment of garnet and in the matrix. Raman mapping analysis shows that a coesite inclusion in kyanite from the garnet rim records an anisotropic residual stress and retains a maximum residual pressure of approximately 0.35 GPa. TEM observations show quartz is absent from the coesite inclusion-host kyanite grain boundaries. Numerous dislocations and sub?grain boundaries are present in the kyanite, but dislocations are not confirmed in the coesite. In particular, dislocations concentrate in the kyanite adjacent to the boundary with the coesite inclusion, and they form a dislocation concentration zone with a dislocation density of ~109 cm?2. A high?resolution TEM image and a fast Fourier transform?filtered image reveal that a tiny dislocation in the dislocation concentration zone is composed of multiple edge dislocations. The estimated dislocation density in most of the kyanite away from the coesite inclusion-host kyanite grain boundaries is ~108 cm?2, being lower than that in kyanite adjacent to the coesite. In the case of a coesite inclusion in a matrix kyanite, using Raman and TEM analyses we could not identify any quartz at the grain boundaries. Dislocations are not observed in the coesite, but numerous dislocations and stacking faults are developed in the kyanite. The estimated overall dislocation density in the coesite?bearing matrix kyanite is ~108 cm?2, but a high dislocation density region of ~109 cm?2 is also present near the coesite inclusion-host kyanite grain boundaries. Inclusion and matrix kyanite grains with no coesite have dislocation densities of ?108 cm?2. Dislocation density is generally reduced during an annealing process, but our results show that not all dislocations in the kyanite have recovered uniformly during exhumation of the UHP rocks. Hence, one of the key factors acting as a buffer to inhibit the coesite to quartz transformation is the mechanical interaction between the host and the inclusion that lead to the formation of dislocations in the kyanite. The kyanite acts an excellent pressure container that can preserve coesite during the decompression of rocks from UHP conditions. The search for and study of inclusions in kyanite may be a more suitable approach for tracing the spatial distribution of UHP metamorphic rocks.
DS201904-0786
2019
Taguchi, T., Igami, Y., Miyake, A., Enami, M.Factors affecting preservation of coesite in ultrahigh-pressure metamorphic rocks: insights from TEM observations of dislocations within kyanite. Sulu UHPJournal of Metamorphic Geology, Vol. 37, 3, pp. 401-414.Chinacoesite

Abstract: To understand the preservation of coesite inclusions in ultrahigh?pressure (UHP) metamorphic rocks, an integrated petrological, Raman spectroscopic and focussed ion beam (FIB) system-transmission electron microscope (TEM) study was performed on a UHP kyanite eclogite from the Sulu belt in eastern China. Coesite grains have been observed only as rare inclusions in kyanite from the outer segment of garnet and in the matrix. Raman mapping analysis shows that a coesite inclusion in kyanite from the garnet rim records an anisotropic residual stress and retains a maximum residual pressure of ~0.35 GPa. TEM observations show quartz is absent from the coesite inclusion-host kyanite grain boundaries. Numerous dislocations and sub?grain boundaries are present in the kyanite, but dislocations are not confirmed in the coesite. In particular, dislocations concentrate in the kyanite adjacent to the boundary with the coesite inclusion, and they form a dislocation concentration zone with a dislocation density of ~109 cm?2. A high?resolution TEM image and a fast Fourier transform?filtered image reveal that a tiny dislocation in the dislocation concentration zone is composed of multiple edge dislocations. The estimated dislocation density in most of the kyanite away from the coesite inclusion-host kyanite grain boundaries is ~108 cm?2, being lower than that in kyanite adjacent to the coesite. In the case of a coesite inclusion in a matrix kyanite, using Raman and TEM analyses, we could not identify any quartz at the grain boundaries. Dislocations are not observed in the coesite, but numerous dislocations and stacking faults are developed in the kyanite. The estimated overall dislocation density in the coesite?bearing matrix kyanite is ~108 cm?2, but a high dislocation density region of ~109 cm?2 is also present near the coesite inclusion-host kyanite grain boundaries. Inclusion and matrix kyanite grains with no coesite have dislocation densities of ?108 cm?2. Dislocation density is generally reduced during an annealing process, but our results show that not all dislocations in the kyanite have recovered uniformly during exhumation of the UHP rocks. Hence, one of the key factors acting as a buffer to inhibit the coesite to quartz transformation is the mechanical interaction between the host and the inclusion that lead to the formation of dislocations in the kyanite. The kyanite acts as an excellent pressure container that can preserve coesite during the decompression of rocks from UHP conditions. The search for and study of inclusions in kyanite may be a more suitable approach for tracing the spatial distribution of UHP metamorphic rocks.
DS201910-2280
2019
Lian, D., Yang, J.Ophiolite hosted diamond: a new window for probing carbon cycling in the deep mantle.Engineering, in press available, 23p. PdfMantlecoesite

Abstract: As reported in our prior work, we have recovered microdiamonds and other unusual minerals, including pseudomorph stishovite, moissanite, qingsongite, native elements, metallic alloys, and some crustal minerals (i.e., zircon, quartz, amphibole, and rutile) from ophiolitic peridotites and chromitites. These ophiolite-hosted microdiamonds display different features than kimberlitic, metamorphic, and meteoritic diamonds in terms of isotopic values and mineral inclusions. The characteristic of their light carbon isotopic composition implies that the material source of ophiolite-hosted diamonds is surface-derived organic matter. Coesite inclusions coexisting with kyanite rimming an FeTi alloy from the Luobusa ophiolite show a polycrystalline nature and a prismatic habit, indicating their origin as a replacement of stishovite. The occurrence in kyanite and coesite with inclusions of qingsongite, a cubic boron nitride mineral, and a high-pressure polymorph of rutile (TiO2 II) point to formation pressures of 10-15?GPa at temperatures ?1300?°C, consistent with depths greater than 380?km, near the mantle transition zone (MTZ). Minerals such as moissanite, native elements, and metallic alloys in chromite grains indicate a highly reduced environment for ophiolitic peridotites and chromitites. Widespread occurrence of diamonds in ophiolitic peridotites and chromitites suggests that the oceanic mantle may be a more significant carbon reservoir than previously thought. These ophiolite-hosted diamonds have proved that surface carbon can be subducted into the deep mantle, and have provided us with a new window for probing deep carbon cycling.
DS202002-0218
2019
Sonin, V., Leech, M., Chepurov, A., Zhimulev, E., Chepurov, A.Why are diamonds preserved in UHP metamorphic complexes? Experimental evidence for the effect of pressure on diamond graphitization.International Geology Review, Vol. 61, 4, pp. 504-519.Russia, Chinacoesite, UHP

Abstract: The preservation of metastable diamond in ultrahigh-pressure metamorphic (UHPM) complexes challenges our understanding of the processes taking place during exhumation of these subduction zone complexes. The presence of diamonds in UHPM rocks implies that diamonds remained metastable during exhumation, and within thermodynamic stability of graphite for an extended period. This work studies the influence of pressure on the surface graphitization rate of diamond monocrystals in carbonate systems to understand the preservation of microdiamond during exhumation of UHP subduction complexes. Experiments were performed with 2-3 mm synthetic diamond monocrystals at 2-4 GPa in ????3 (1550°?) and ?2??3 (1450°?) melts using a high-pressure multi-anvil apparatus. The highest rate of surface graphitization took place at 2 GPa; diamond crystals were almost completely enveloped by a graphite coating. At 4 GPa, only octahedron-shaped pits formed on flat {111} diamond crystal faces. Our results demonstrate that the surface graphitization rate of diamonds in the presence of carbonate melts at 1450-1550°C increases with decreasing pressure. Decreased pressure alone can graphitize diamond regardless of exhumation rate. Metastable diamond inclusions survive exhumation with little or no graphitization because of excess pressure up to 2 GPa acting on them, and because inclusions are protected from interaction with C-O-H fluid.
DS202009-1612
2020
Bidgood, A.K., Parsons, A.J., Lloyd, G.E., Wtares, D.J., Goddard, R.M.EBSD-based criteria for coesite-to-quartz transformation.Journal of Metamorphic Geology, doi.org/10/111/jmg.12566Mantlecoesite

Abstract: Ultrahigh?pressure (UHP) metamorphism observed in continental terranes implies that continental crust can subduct to ~40 kbar before exhuming to the surface. This process is one of the least understood and widely debated parts of the orogenic cycle. The dominantly felsic composition of UHP continental terranes means that many petrology?based techniques for determining peak pressures and temperatures are often not possible. In such cases, the detection of UHP conditions depends on the preservation of coesite, a rarely preserved mineral in exhumed UHP terranes as it rapidly transforms to quartz on decompression. Consequently, the qualitative identification of palisade quartz microstructures that form during the retrograde transformation of coesite to quartz is often used to identify UHP terranes. In this study, we conduct EBSD and misorientation analysis of palisade quartz inclusions in the coesite?bearing pyrope quartzite from the Dora Maira massif in the Alps, and matrix?scale palisade quartz in the Polokongka La granite from Tso Morari in the Ladakh Himalaya, in order to quantitatively define crystallographic characteristics of quartz after coesite. The repeatability of our observations in two unrelated occurrences of UHP rocks supports our interpretation that the following features provide a systematic and predictable set of criteria to identify the coesite to quartz transition: (1) Quartz crystallographic orientations define spatially and texturally distinct subdomains of palisade quartz grains with ‘single crystal’ orientations defined by distinct c?axis point?maxima. (2) Adjacent subdomains are misorientated with respect to each other by a misorientation angle/axis of 90°/. (3) Within each subdomain, palisade quartz grain boundaries commonly have intra? and inter?granular misorientations of 60°/[0001], consistent with the dauphiné twin law. Our observations imply that the coesite?to?quartz transformation is crystallographically controlled by the epitaxial nucleation of palisade quartz on the former coesite grain, specifically on potential coesite twin planes such as (101) and (021).

 
 

You can return to the Top of this page


Copyright © 2024 Kaiser Research Online, All Rights Reserved