Rondonia - Technical, Media and Corporate |
Posted/ Published | Author | Title | Source | Region | Keywords |
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DM2003-1617 2003 | Business News America | Indigenous group, Funai expel artisan miners | Business News America, Feb. 21, 1/2p. | Brazil, Mato Grosso, Rondonia | News item |
DC2003-2799 2003 | Vaaldiam Resources Ltd | Vaaldiam diamond property acquisition update. Pimenta Bueno, Rondonia | Vaaldiam Resources Ltd., June 20 1p. | Brazil, Rondonia | News item - press release |
DC2003-2800 2003 | Vaaldiam Resources Ltd | Vaaldiam to acquire Brazilian diamond property $ 1.5 million financing underway | Vaaldiam Resources Ltd., March 6, 3p. | Brazil, Rondonia | News item - press release |
DC2003-2801 2003 | Vaaldiam Resources Ltd | Vaaldiam diamond property acquisition update. Pimenta Bueno, Rondonia, Brazil | Vaaldiam Resources Ltd., Oct. 14, 1p. | Brazil, Rondonia | News item - press release |
DC200512-2975 2005 | Vaaldiam Resources Ltd. | Rio Tinto advances towards mini-bulk sampling program on Vaaldiam's Pimenta Bueno program. | Vaaldiam Resources Ltd., Sept. 15, 2p. | South America, Brazil, Rondonia | News item - press release, Rio Tinto |
DS200612-0873 2006 | Masun, K., Scott Smith, B. | The Pimenta Bueno kimberlite field, Rondonia, Brazil: evidence for tuffisitic kimberlite. | Emplacement Workshop held September, 5p. extended abstract | South America, Brazil, Rondonia | Deposit - Pimenta Bueno - petrography |
DC200612-3376 2006 | Sola Resource Corporation | October 2006 exploration update. Pimenat Bueon region of Rondonia, Brazil. | Sola Resource Corporation, Oct. 12, 2p. | South America, Brazil, Rondonia | News item - press release |
DC200612-3377 2006 | Sola Resource Corporation | April 2006 exploration and development update... Pimenta Bueno region. | Sola Resource Corporation, April 4, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200612-3378 2006 | Sola Resource Corporation | July 2006 exploration update... Pimento Bueno district. | Sola Resources Corporation, July 13, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200612-3504 2006 | Vaaldiam Resources Ltd. | Two new kimberlite pipes discovered at Pimenta Bueno. | Vaaldiam Resources Ltd., Sept. 14, 2p. | South America, Brazil, Rondonia | News item - press release |
DC200612-3519 2005 | Vaaldiam Resources Ltd. | Vaaldiam and Rio Tinto expand Pimenta Bueno landholdings. | Vaaldiam Resources Ltd., Dec. 1, 1p. | South America, Brazil, Rondonia | News item - press release, Rio Tinto |
DC200612-3520 2006 | Vaaldiam Resources Ltd. | Cosmos 1 mini-bulk sample yields 117 macro diamonds. | Vaaldiam Resources Ltd., July 4, 3p. | South America, Brazil, Rondonia | News item - press release, Rio Tinto |
DM200712-1969 2007 | Diamonds.net | Brazil: policewoman charged with illegal diamond possession. | Diamonds.net, June 14, 1/8p. | South America, Brazil, Rondonia | News item - legal |
DC200712-2904 2007 | Great Western Diamonds Corporation | Great Western Diamonds exploratione xpands into Brazil. MOU with Santa Elin a Mines ... 100 % interest in Rondonia diamond project. | Great Western Diamonds Corporation, Jan, 22, 2p. | South America, Brazil, Rondonia | News item - press release |
DC200712-2905 2007 | Great Western Diamonds Corporation | Great Western Diamonds expands exploration into Brazil... Rondonia diamond project. | Great Western Diamonds Corporation, Jan. 21, 2p. | South America, Brazil, Rondonia | News item - press release |
DC200712-2906 2007 | Great Western Diamonds Corporation | Great Western Diamonds files revised business acquisition report for Rondonia diamond project. | Great Western Diamonds Corporation, Sept. 13, 1p. | South America, Brazil, Rondonia | News item - press release |
DS200712-0458 2007 | Hunt, L.C., Morton, R. | The formation of unconventional diamond deposits - a case study on the Carolin a kimberlites in Brazil. | Geological Association of Canada, Gac-Mac Yellowknife 2007, May 23-25, Volume 32, 1 pg. abstract p.40-41. | South America, Brazil, Rondonia | Carolina pipe |
DC200712-3205 2007 | Sola Resource Corporation | Sola's kimberlite indicator(s) exploration program registers another diamond discovery on Rondonia claims and ground based geophysical survey cont. Carolin a Pipe | Sola Resource Corporation, Feb. 7, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3206 2007 | Sola Resource Corporation | Drilling and bulk sampling of kimberlites in Rondonia, Brazil is advancing well. | Sola Resource Corporation, Nov. 5, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3207 2007 | Sola Resource Corporation | Sola's expanded kimberlite quest registers further success in Rondonia. | Sola Resource Corporation, Jan. 9, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3208 2007 | Sola Resource Corporation | New kimberlite occurrence discovered in Rondonia, Brazil. | Sola Resource Corporation, Nov. 14, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3209 2007 | Sola Resource Corporation | Exploration program in Rondonia advances into expansion phase. | Sola Resource Corporation, September 5, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3210 2007 | Sola Resource Corporation | Exploration progress and development report. Carolin a kimberlite. | Sola Resource Corporation, May 24, 2p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3211 2007 | Sola Resource Corporation | Sola's Carolin a Diamondiferous kimberlite in Rondonia shows increased tonnage potential and appears to have an associated kimberlite cluster. | Sola Resources Corporation, Jan. 26, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3212 2007 | Sola Resource Corporation | Drilling of Carolin a kimberlite pipe progressing well. | Sola Resource Corporation, June 21, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3214 2007 | Sola Resource Corporation | Drill program and exploration in Rondonia, Brazil pushes ahead. | Sola Resources Corporation, Sept. 25, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3215 2007 | Sola Resource Corporation | Exploration and development report. EM and Magnetic geophysics, surface stripping Carolin a kimberlite. | Sola Resources Corporation, May 2, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3216 2007 | Sola Resource Corporation | Exploration, drilling and development update... drill program on Carolin a kimberlite and new diamond discovery in Espigao d'Oeste area. | Sola Resources Corporation, August 15, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3303 2006 | Vaaldiam Resources Ltd. | Vaaldiam and Majescor recover 38 diamonds from Brauna 3. | Vaaldiam Resources Ltd., Dec. 12, 2p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3304 2006 | Vaaldiam Resources Ltd. | Mini-bulk sampling processing underway at Brauna. | Vaaldiam Resources Ltd., Dec. 4, 2p. | South America, Brazil, Rondonia | News item - press release, Majescor |
DC200712-3322 2007 | Vaaldiam Resources Ltd. | Vaaldiam closes the previously announced private placement financing. | Vaaldiam Resources Ltd., August 15, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3323 2007 | Vaaldiam Resources Ltd. | Vaaldiam strikes new deal with Rio Tinto. | Vaaldiam Resources Ltd., June 26, 2p. | South America, Brazil, Rondonia | News item - press release |
DC200712-3324 2007 | Vaaldiam Resources Ltd. | Five new kimberlites discovered at Pimenta Bueno. | Vaaldiam Resources Ltd., Feb. 28, 2p. | South America, Brazil, Rondonia | News item - press release |
DC200812-2951 2008 | Brazilian Diamonds Limited | Quarterly report - discussion on projects. | Brazilian Diamonds Limited, Nov. 12, 5p. | South America, Brazil, Rondonia | News item - press release |
DS200812-0720 2008 | Masun, K.M., Scott Smith, B.H. | The Pimenta Bueno kimberlite field, Rondonia, Brazil: tuffisitic kimberlite and transitional textures. | Journal of Volcanology and Geothermal Research, Vol. 174, 1-3, pp. 81-89. | South America, Brazil, Rondonia | Diatreme,emplacement, transitional textures |
DC200812-3369 2008 | Sola Resource Corporation | New property acquisitons, Mineral Fields group financing. New claims to east of existing ones. | Sola Resource Corporation, Feb. 7, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200812-3370 2008 | Sola Resource Corporation | Bulk sampling of Carolin a kimberlite progressing with significant diamond recoveries. | Sola Resource Corporation, July 11, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200812-3371 2008 | Sola Resource Corporation | Bulk sampling of Carolin a kimberlite progressing with further significant diamond recoveries. | Sola Resource Corporation, July 30, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200812-3372 2008 | Sola Resource Corporation | Discovery of another kimberlite occurrence. | Sola Resource Corporation, March 11, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200812-3373 2007 | Sola Resource Corporation | Year end report on diamond exploration/development in Rondonia, Brazil. | Sola Resources Corporation, Dec. 11, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200812-3374 2007 | Sola Resource Corporation | Update on kimberlite dike exploration/development in Rondonia, Brazil. | Sola Resources Corporation, Dec. 19, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200812-3377 2008 | Sola Resource Corporation | Sola to complete diamond valuation and to option high grade manganese occurrence. | Sola Resource Corporation, Nov. 14, 1p. | South America, Brazil, Rondonia | News item - press release |
DC200812-3452 2008 | Vaaldiam Resources Ltd. | Processing of Pimenta Bueno bulk sample underway. | Vaaldiam Resources Ltd., Feb. 5, 2p. | South America, Brazil, Rondonia | News item - press release |
DC200812-3453 2008 | Vaaldiam Resources Ltd. | 39 macrodiamonds recovered from Cosmos 1 kimberlite sample. | Vaaldiam Resources Ltd., August 18, 2p. | South America, Brazil, Rondonia | News item - press release |
DS201112-0012 2010 | Alencar de Carvalho Borges, M.P., Rahal Lenharo, S.L. | Mineralogia dos diamantes da terra indigena Roosevelt-ro e implicacoes para a proveniencia e genese. | 5th Brasilian Symposium on Diamond Geology, Nov. 6-12, abstract p. 52. | South America, Rondonia | Overview of area |
DS201112-0064 2011 | Basei, M., Svisero, D., Iwanuch, W., Sato, K. | U Pb zircon ages of the Alto Paranaiba and Juin a kimberlitic provinces, Brazil. | Goldschmidt Conference 2011, abstract p.496. | South America, Brazil, Minas Gerais, Mato Grosso, Goias, Rondonia | Coromandel region |
DS201112-0631 2010 | Mahon, K.A. | Estudos com base em quimica semi-quantitativa atraves da microscopis eletronica de Varredura dos minerais satelites do corpo kimberlitico no minicipio de Ariquemes | 5th Brasilian Symposium on Diamond Geology, Nov. 6-12, abstract p. 65. | South America, Brazil, Rondonia | Geochemistry - Ariquemes |
DS201212-0770 2012 | Weska, R.K., Brod, J.A., Dantas, E.L., Araujo, D.P. | Mineral chemistry of garnets and ilmenites of the Pepper-1 and Cosmos-3 intrusions, Espigao D'Oeste, Rondonia, Brazil. | 10th. International Kimberlite Conference Held Bangalore India Feb. 6-11, Poster abstract | South America, Brazil, Rondonia | Deposit - Pepper, Cosmos |
DS201610-1846 2016 | Borges, M.P.A.C., Moura, M.A., Lenharo, S.L.R., Smith, C.B., Araujo, D.P. | Mineralogical characaterization of diamonds from Roosevelt Indigenous Reserve, Brazil, using non-destructive methods. | Lithos, in press available 17p. | South America, Brazil, Rondonia | Deposit - Igarape Lajes Diggings |
| Abstract: In this study, 660 diamonds from Igarapé Lajes Diggings (Roosevelt and Aripuanã Park indigenous areas), in Amazonian craton, Rondônia State, Brazil, were investigated. Their morphological, optical and surface characteristics were described using optical and scanning electron microscopy (SEM), cathodoluminescence (CL) and infrared spectroscopy (FTIR). The results demonstrated a predominance of resorbed crystals with many surface corrosion features, generally colorless, and led to the identification of four distinct groups: G1, G2, G3 and G4. Group G1 presents features of secondary sources while G2 and G4 show only primary features, some of which are not described in literature. Group G3 is similar to the other groups, however, is composed of less resorbed specimens with primary octahedral morphology relatively well preserved, indicating shorter time of exposure to dissolution effects. Cathodoluminescence in G2 is attributed to features of plastic deformation and to low contents of nitrogen (< 100 ppm, Type II) and high aggregation (IaB). G4 shows homogeneous blue CL, high contents of nitrogen (700 to 1000 ppm) and intermediate aggregation (IaAB). G1 presents luminescence influenced by radiation effects and populations with N contents and aggregation in the same ranges of G2 and G4, suggesting that the primary sources of the three groups can be the same. The relationship of nitrogen content versus aggregation state indicates higher temperatures of formation for G2 and lower for G4. The obtained data suggests that diamonds of G2 originated in sublithospheric mantle as has also been reported in nearby deposits (Machado River and Juína). The employed techniques were also effective in distinguishing diamonds from Roosevelt Reserve and from other localities, indicating that they could be used for improvement of certification procedures of diamonds of unknown origin. |
DS201710-2251 2015 | Muniswamy, M. | Tectonic setting and structural controls on kimberlite magmatism in Brazil. | Thesis, Phd. Universidade Estadual de Campinas ** in PORT, 179p. Pdf | South America, Brazil, Minas Gerais, Rondonia, Mato Grosso | Magmatism |
DS201812-2849 2018 | Martins, M. | Carolina kimberlite and the exploration and potential of the Pimenta Bueno diamond District, Rondonia, Brazil. | 7th Symposio Brasileiro de Geologia do Diamante , Title only | South America, Brazil, Rondonia | deposit - Carolina |
DS202005-0770 2020 | Weska, R.K., Ferreira Barbosa, P., Martins, M.V.C., Souza, V.S., Dantas, E.L. | Pectolite in the Carolina kimberlitic intrusion, Espigao D'Oeste - Rondonia, Brazil. ( Pimenta Bueno field) | Journal of South American Earth Sciences, Vol. 100, 10.1016/j.jsames.2020.102583 7p. Pdf | South America, Brazil, Rondonia | deposit - Carolina |
| Abstract: In this study, we characterize pectolite that occurs in a Carolina kimberlitic intrusion from the Pimenta Bueno Kimberlite Field (PBKF). The PBKF is the only kimberlite field of Permo-Carboniferous age in Brazil and is found on the southern Amazonian Craton. Pectolite, an Na-Ca-silicate usually identified in alkaline rocks as a primary mineral, is not common in the mineral paragenesis of kimberlites and is described here for the first time in Brazil. The genesis of pectolite in kimberlite has been well-studied and can be interpreted as a primary or secondary mineral resulting from the infiltration of an Na-rich fluid into metasomatic reactions. In the rocks from the PBKF, pectolite mainly occurs as fibrous and radial aggregates enriched in K2O that grow between olivine partially altered to serpentine and phlogopite. The results of field and petrographic observations suggest that the PBKF pectolite is of secondary origin, having formed during the hydrothermal alteration of the Carolina kimberlitic intrusion. |