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SDLRC - Diamond - Grade


The Sheahan Diamond Literature Reference Compilation - Scientific and Media Articles based on Major Keyword - Diamond - Grade
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.

Diamond - Grade articles deal with the problem of establishing the diamond content of a deposit in terms of carats per tonne (ct/t) or, as is often used in the industry to make low grade deposits less decimal-like, in terms of carats per hundred tonnes (cpht). This keyword is distinct from the problem of "grading" individual diamonds in terms of the 4 C's (carat, cut, clarity and color) for the purpose of valuing the diamond content of a deposit. These articles will focus on the statistical means for estimating the "macro" grade of a diamond deposit.

Diamond - Grade
Posted/
Published
AuthorTitleSourceRegionKeywords
DS1975-1126
1979
Martin, J.E.Ashton Joint Venture- Second Quarter 1979 Progress Report. Attachment to Letter from Jem to Ajaj.In House Unpubl. Report., 3P.Australia, Western AustraliaGrades, Tonnages, Sampling, Stones, Carats
DS1985-0009
1985
Anon.Diamond Grade DecliningIndustrial Minerals, VO. 219, MARCH, P. 9.Australia, Western AustraliaDiamond Grade, Production, Argyle
DS1992-1346
1992
Schulze, D.J.Diamond eclogite from Sloan Ranch, Colorado, and its bearing on the diamond grade of the Sloan kimberlite.Economic Geology, Vol. 87, No. 8, December pp. 2175-2179.ColoradoEclogite, Diamond grade, economics
DS1993-0593
1993
Guocheng Pan, Arik, A.Restricted kriging for mixture of grade modelsMathematical Geology, Vol. 25, No. 6, August pp. 713-736GlobalGeostatistics, Ore reserves, grades
DS1994-0866
1994
Kaminsky, F.J.Principles of direct and indirect diamond grade evaluation in Kimberlite and lamproite pipes.Northwest Territories 1994 Open House Abstracts, p. 45. abstractGlobalDiamond grade
DS1994-1843
1994
Vasilenko, V.B., et al.Petrochemistry and diamond grade of the kimberlites of Yakutia.(Russian)Doklady Academy of Sciences Nauk, (Russian), Vol. 338, No. 1, Sept. pp. 85-88.Russia, YakutiaGeochemistry, Diamond grade
DS1995-0883
1995
Jennings, C.M.H.The exploration context for diamondsJournal of Geochemical Exploration, Vol. 52, pp. 113-124.GlobalDiamond exploration, production charts, pipes, grades, Area selection
DS1996-0539
1996
Goldie, R.J.The dollar: an economic geologist's most important unit of measurementThe Canadian Mining and Metallurgical Bulletin (CIM Bulletin), Vol. 89, No. 997, Feb. pp. 39-41Canada, GlobalEconomics, Grades, tons, geostatistics, costs, grades in dollars
DS1997-0905
1997
Pham, T.D.Grade estimation using fuzzy set algorithmsMath. Geol, Vol. 29, No. 2, Feb. pp. 291-305GlobalGeostatistics, Grades
DS1998-0205
1998
Canadian Intergovernmental Working Group, Mineral Ind.Exploration for diamonds in CanadaOverview trends Canadian Mineral Exploration, pp. 23-34.Northwest Territories, Alberta, SaskatchewanProjects, economics, grades, values
DS2002-1634
2002
Valislenko, V.B., Zinchuk, N.N., Krasavchikov, V.G., Kuznetsova, L.G.Diamond potential estimation based on kimberlite major element chemistryJournal of Geochemical Exploration, Vol. 76, 2, pp. 93-112.Russia, YakutiaChemistry, diamond grade, whole rock composition, Exploration - techniques
DS2003-0357
2003
Dunn, D.P.Diamond economics of the Prairie Creek lamproite, Murfreesboro, Arkansas, USAOre Geology Reviews, Vol. 22, 3-4, March pp. 251-262.ArkansasEconomics - erosion model, history, grades, Deposit - Prairie Creek
DS200812-0606
2008
Kryvoshlyk, I.Multivariate functions for the kimberlite diamond grade calculations.earthref.org, July 2, 6p.TechnologyDiamond grade
DS200812-0607
2008
Kryvoshlyk, I.Multivariate functions for the kimberlite grade calculations.available - google kryvoshlyk EarthRef email ikryvoa481 @rogers.com, 6p, overview tel 416 248-8514TechnologyDiamond grade - chemical composition of pyrope
DM201112-2538
2011
The Israeli Diamond IndustryBotswana diamond trading facility expected to be operational in 2012.israelidiamond.co.il, Sept. 4, 1/4p.Africa, BotswanaMineral grades - not specific to diamonds
DS201212-0567
2012
Porritt, L.A., Cas, R.A.F., Ailleres, L., Oshust, P.The influence of volcanological and sedimentaological processes on diamond grade distribution in kimberlites: examples from the Ekati diamond mine, NWT, Canada.Bulletin of Volcanology, Vol. 73, 8, pp. 1085-1105.Canada, Northwest TerritoriesDiamond grade
DS201412-0876
2014
Spetsius, Z.Metasomatic diamonds in eclogite xenoliths from Yakutian kimberlites: implications for diamond grade estimation.ima2014.co.za, AbstractRussia, YakutiaDiamond grade
DS201412-0997
2014
Yambissa, M.T., Bingham, P.A., Forder, S.D.Mantle conditions and geochemical environment as controls of diamond survival and grade variation in kimberlitic diamond deposits: Lunda Province NE Angola.30th. International Conference on Ore Potential of alkaline, kimberlite and carbonatite magmatism. Sept. 29-, http://alkaline2014.comAfrica, AngolaDiamond grade
DS201705-0867
2017
Ogden, J.M.Rethinking laboratory reports for the geographical origin of gems.Journal of Gemmology, Vol. 35, 5, pp. 416-423.TechnologyReports - gem reports, tests, grades

Abstract: The proliferation of gemmological laboratory reports and the need for transparency to best protect against litigation suggest that some gem-testing laboratories should consider changes in the wording and content of their geographical origin reports. Based on the author's recent broader study of the legal aspects of the opinions provided by experts in the field of art and antiques, the main proposals presented here are that statements of opinion rather than fact should be clearly expressed as such where they are presented on a report, rather than relegating all mention of 'opinion' to the 'terms and conditions', and that the basic nature of the observational or analytical evidence on which any opinions are based should be noted. In addition, a laboratory might usefully provide some indication of the level of confidence in its opinion.
DS201708-1699
2017
Kriulina, G.Forecast diamond quality in the deposit.11th. International Kimberlite Conference, PosterRussiadiamond resource
DS201805-0974
2018
Sasman, F., Deetlefs, B., van der Westhuyzen, P.Application of diamond size frequency distribution and XRT technology at a large diamond producer. The Journal of the Southern African Institute of Mining and Metallurgy, Vol. 118, Jan. pp. 1-6.Africa, South Africadiamond size frequency

Abstract: Diamond size frequency distribution (SFD) curves, combined with the associated dollar per carat per size class, play an important role in the diamond industry. Value per size class is unique for each deposit and typically varies from less than a dollar per carat to several thousands of dollars per carat for special stones. Recovery of large stone therefore contributes significantly to the bottom line of a large diamond producer. While the design of the process plant should prevent damage and possible breakage of large stones, it should also ensure adequate liberation of the finer diamonds. Innovative solutions are required to protect and recover type I and II diamonds if prominent within the resource. X-ray transmission (XRT) sorting presents the opportunity to develop flow sheet designs that incorporate a balance between exploitation of the resource and process efficiency, as well as practical capital and operating costs. This paper serves to illustrate the role and application of SFD curves in determining optimum cut-off and re-crush sizes within the flow sheet of a large diamond producer. A thorough understanding of the unique technical and economic aspects of a deposit provides the basis from where new and innovative technologies can be proposed, allowing mining companies to maintain and improve profit margins. It highlights the results of various plant trials and newly commissioned XRT sorters for larger size fractions. It also provides recommendations for future applications of XRT machines in the diamond process flow sheet.

 
 

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