 | | Journal (article/letter/editorial) |
| Museum of Nature and Science 2001 Colorado Boulevard Denver, Colorado 80205-5798 jmurphy @ dmns.org PETER...Survey MS 150, Box 25046 Federal Center Denver, Colorado 80225-0046 pmodresk @ usgs.gov Unless otherwise...to 2000) J oin us for a gemstone tour around Colorado! Our field trip takes us from east to west in...in the same way you may have toured through Colorado on a mineral collecting trip. This route, from the...gemstones are known to occur. We cannot discuss every Colorado gemstone occurrence; rather, this is a general |
 | | Journal (article/letter/editorial) |
| The timing of kimberlite magmatism in North America: implications for global kimberlite genesis and diamond...compilation of more than 100 kimberlite age determinations, four broad kimberlite emplacement patterns can...Saskatchewan, central USA), and (4) a western mixed (Cambrian-Eocene) Type 3 kimberlite province (Alberta...(Alberta, Nunavut, Northwest Territories, Colorado/Wyoming). Ten new U – Pb perovskite/mantle zircon and Rb –...Within the Type 3 Slave craton, at least four kimberlite age domains exist: I-a southwestern Siluro-Ordovician |
 | Schulze, Daniel J., Coopersmith, Howard G., Harte, Ben, Pizzolato, Lori-Ann (2008) Mineral inclusions in diamonds from the Kelsey Lake Mine, Colorado, USA: Depleted Archean mantle beneath the Proterozoic Yavapai province. Geochimica et Cosmochimica Acta, 72 (6) 1685-1695 doi:10.1016/j.gca.2007.09.037 | Journal (article/letter/editorial) |
| inclusions in diamonds from the Kelsey Lake Mine, Colorado, USA: Depleted Archean mantle beneath the Proterozoic...Associates, P.O. Box 1916, Fort Collins, CO 80522, USA School of GeoSciences, Grant Institute of Earth Science...the Kelsey Lake Mine in the Colorado-Wyoming State Line Kimberlite district. Eighteen olivines, seven Cr-pyropes...diamond suites studied in the State Line district (Sloan, George Creek), which are overwhelmingly eclogitic...block of Archean lithosphere that, at the time of kimberlite eruption, existed beneath the Proterozoic Yavapai |
 | | Journal (article/letter/editorial) |
| of inclusion-bearing diamonds from the Venetia kimberlite, Northern Province, South Africa: implications...based on nitrogen content and nitrogen aggregation state. These are a minor population of diamonds with nitrogen...settings such as the Argyle lamproite and the George Creek kimberlite. This could be a consequence of diamond...with degradation of platelets at the Venetia kimberlite, relative to diamonds from the Argyle lamproite...inclusion-bearing diamonds from the 533-Ma-old Venetia kimberlite cluster (Allsopp et al. 1995). The locality is |
 | Fitzsimons, I. C. W., Harte, B., Chinn, I. L., Gurney, J. J., Taylor, W. R. (1999) Extreme chemical variation in complex diamonds from George Creek, Colorado: a
SIMS study of carbon isotope composition and nitrogen abundance. Mineralogical Magazine, 63 (6) 857-878 doi:10.1180/002646199548970 | Journal (article/letter/editorial) |
| chemical variation in complex diamonds from George Creek, Colorado: a SIMS study of carbon isotope composition...section before this papaer. Diamonds from George Creek, Colorado, preserve complex intergrowth textures...consistent correlations with either CL or N. The George Creek stones preserve evidence of extreme temporal...large variations in N concentration and aggregation state are used to classify natural stones into a number...obtained for three stones from the Colorado-Wyoming Kimberlite Province, USA. These latter stones were chosen |
 | Sobolev, Vladimir N., McCammon, Catherine A., Taylor, Lawrence A., Snyder, Gregory A., Sobolev, Nikolai V. (1999) Precise Moessbauer milliprobe determination of ferric iron in rock-forming minerals and limitations of electron microprobe analysis. American Mineralogist, 84 (1) 78-85 doi:10.2138/am-1999-1-208 | Journal (article/letter/editorial) |
| clinopyroxene from eclogite xenoliths from the Udachnaya kimberlite in Yakutia. The effects of Fe31 contents in garnet...techniques are incapable of measuring oxidation state, resulting in various as* E-mail: vsobolev@utk.edu...(;200 mm in size) within diamond from the George Creek kimberlite. Their results showed that there is little...in silicates from eclogites from the Udachnaya kimberlite, Yakutia. Eclogites are basically bimineralic...of diamondiferous eclogites from the Udachnaya kimberlite pipe, Yakutia, Russia. They were described in |
 | | Book |
| International Kimberlite Conference / / y Digitized by the Internet Archive in 2018 with funding from...org/details/sixthinternation06inte SIXTH INTERNA TIONAL KIMBERLITE CONFERENCE Novosibirsk, August 1995 EXTENDED...Organizing Committee of the 6th International Kimberlite Conference takes no responsibility for authors...authors errors and omissions. SIXTH INTERNATIONAL KIMBERLITE CONFERENCE Organizing committee Chairman: N...(Novosibirsk) International Treasurer: H.O.Meyer (USA) Local Treasurer: 0 AKozmenko (Novosibirsk) Members: |
 | | Book |
| org/details/seventhinternati07inte SEVENTH INTERNATIONAL KIMBERLITE CONFERENCE Cape Town, April 1998 EXTENDED ABSTRACTS...Organising Committee of the 7th International Kimberlite Conference takes no responsibility for authors’...omissions. SOUTH AFRICA SEVENTH INTERNATIONAL KIMBERLITE CONFERENCE SPONSORS The 7IKC Organising Committee...recently discovered kimberlites of the Siberian kimberlite province. 9 K - rich clinopyroxenes as mantle...Chromite Macrocrysts and their Inclusions, Guaniamo Kimberlite Field, Venezuela. Primary and related diamond |
 | | Journal (article/letter/editorial) |
| This article was downloaded by: [North Carolina State University] On: 10 March 2015, At: 21:06 Publisher:... United Kingdom Downloaded by [North Carolina State University] at 21:06 10 March 2015 Abstract The...covering temperatures likely to occur during kimberlite emplacement); this has been summarized by Evans...their nitrogen concentration or defect aggregation state, either because it was not thought relevant at the...features. 285 Downloaded by [North Carolina State University] at 21:06 10 March 2015 286 MENDELSSOHN |
 | | Journal (issue) |
| Nacken/Cermany H Espig/IG-Farben/Germany CC Chatham/USA Cilson/France W Zerfass/Cermany FIS FIS FIS FIS...Flanigen/Quintessa/Linde/USA Adachi Shin/Japan Regency/Vacuum Ventures/USA HyS 1988 Aquamarine, red...Hoquiam/USA 1903 Ruby (SP) 1907 Blue sapphire Verneuil/Baikovsky/France 1942 Ruby L Merker/Linde/USA 1947...corundum Linde/USA Linde/USA 1960 Ruby discs (SP) FR Charvat/Linde/USA 1965 Ruby H LaBelle/Tyco/USA 1971 Sapphire...Bijoreve/Seiko/Japan 1983 Ruby, etc. (NC) Union Carbide/USA and others 1990 Pink Ti-sapphire FIF VeF VeF VeF |
 | | Journal (issue) |
| remnants of black coloration which sporadically line the surface of the laser-induced continuous fracture...Ruby and sapphire. RWH Publishing, Boulder, CO, USA. pl53 Johnson, M.L., and Koivula, J.I., 1998. Gem...1994. Gemstone enhancement, history science and state of the art. Butterworth-Heinemann Ltd., Oxford Read...by P. Giese) 75.13 Obsidi an Mexico Obsidi an USA Natuml glass references (EMP analuses by H. Sclnoa...The test report of Taiwan blue chalcedony. Taiwan Mining, 21(3/4), 17-20 (in Chinese) Chen C.J., and Zen |
George Creek Kimberlite, State Line Kimberlite Mining District, Larimer County, Colorado, USA