 | | Journal (article/letter/editorial) | | 361-374 (2010) DOI : 10.3749/canmin.48.2.361 ZINCOCHROMITE FROM THE GUANIAMO RIVER DIAMONDIFEROUS PLACERS...Vandoeuvre-lès-Nancy, cedex, France Abstract Zincochromite associated with chromite and magnesiochromite...microhardness (load 100 g) is 1367(84) kg/mm2. Zincochromite containing 60 mol.% ZnCr2O4 has a unit cell...a equal to 8.271(3) Å. As revealed by EPMA, zincochromite grains are markedly zoned, with the rim and...Furthermore, the chromite crystals partly replaced by zincochromite indicate high-temperature metasomatic processes |  | | Journal (article/letter/editorial) | | minerals of the platinum-group elements (PGE) and gold (e.g., Nixon et al. 1990, Levson & Morison 1995...of serpentinized dunites, in the Mashaba chromite mine, Zimbabwe (Bevan & Mallinson 1980). Complexly zoned...serpentinite (ophiolite) complex, Kuhmo greenstone belt, Finland (Liipo et al. 1995). Weiser & Hirdes (1997)...with a mean of 13.3% ZnO, from gold-bearing metaconglomerates in Ghana. The estimated content of Fe3+...3A–F). 0.2 apfu in all these samples from Finland, Ghana, and in the presently analyzed Zn-rich phase from |  | | Journal (article/letter/editorial) | | inclusions from the A154 South pipe, Diavik Diamond Mine, Northwest territories, Canada. Lithos, 98, 160-176...355-372. Johan, Z. and Ohnenstetter, D. (2010) Zincochromite from the Guaniamo River diamondiferous placers...from Plaleoproterozoic conglomerates at Tarkwa gold mine, Ghana. Canadian Mineralogist, 35, 587-595. Wylie |  | Canet, C., Alfonso, P., Melgarejo, J.-C., Jorge, S. (2003) V-RICH MINERALS IN CONTACT-METAMORPHOSED SILURIAN SEDEX DEPOSITS IN THE POBLET AREA, SOUTHWESTERN CATALONIA, SPAIN. The Canadian Mineralogist, 41 (3) 561-579 doi:10.2113/gscanmin.41.3.561 | Journal (article/letter/editorial) | | Ba–F–Pb–Zn–Cu–Ni–Co–Ag veins, as at the Atrevida mine, the largest Ba deposit in the southwestern Catalonian...calc-silicate crystals was reported in the Hemlo gold deposit, Canada (Pan & Fleet 1992). Goldmanite is...(Table 2, Fig. 9). High proportions of the zincochromite component are typical of many chromite occurrences...Bohemia. Veins with roscoelite and barite (with native gold and nickel in the gangue) cut the assemblage. Other...(1989): The mineralogy and geochemistry of the Hemlo gold deposit, Ontario. Geol. Surv. Can., Econ. Geol. |  | | Book (edition) | | Average Hardness Soft minerals, such as galena or gold, are very difficult to polish without any scratches;...certain degree of bending, while some metals, such as gold, may be deformed into very thin sheets. The term...pyrite, and irregular late stage pore-fillings of gold (yellow). Right: Finely laminated iron oolith with...Mineral lamellar faint, red yes brown bright green gold-yellow, silver-white (Ag) to copper-red (Cu); 72...bluish tint; 55.12 Internal Twinning Reflect. Gold, native Polarite yes Nickelskutterudite yes |  | | Book (edition) | | 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit...various degrees. less common are malleable (e.g gold). ductile (e.g. copper). sectile (e.g. chalcocite)...Another problem concerned genetic conditions in the gold-bearing "greenstone" in Abitibi province in northern...Rice, Dolores co., both Colorado, at the Questa mine, Taos co., New 1994. Abernathyite K2[(UOJ 2l(AsO_J2]•6HzO...Harding Co .. South Dakota. and at the Fuemrole No2 mine, Emery co .. Utah. Also at Menzenschwand Scbwarzwald |
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