 | | Journal (article/letter/editorial) | | Origin of Platinum-Bearing Placers in the Aluchin Horst, Russian Far East STANISLAV S. GORNOSTAYEV,†...109017, Russia Abstract The Quaternary gold–platinum-group mineral (PGM) placers of the Aluchin horst, western...western Chukotka, Russian Far East, contain PGM (mostly Pt-Fe alloys) typical of those associated with...rocks. They form the primary source of PGM. The PGM placer nuggets vary considerably in size (0.1–9 mm), shape...degree of abrasion, indicating a long history of placer-forming processes. Some of the nuggets are covered |  | | Journal (article/letter/editorial) | | 1687-1710 (2005) PLATINUM-GROUP MINERALS FROM FIVE PLACER DEPOSITS IN BRITISH COLUMBIA, CANADA ANDREI Y....suite of gold- and platinum-group-element (PGE) placer deposits in British Columbia have been analyzed...analyzed using the electron-microprobe (EMP). The PGM placer grains (n = 70, 0.1–1.5 mm in size) principally...Pt and poor in Fe, observed at the boundary of placer Pt–Fe alloy grains, provide evidence for a removal...affinities, compositions and associations of the placer PGM examined appear consistent with two types of |  | | Journal (issue) | | border. For detailed information on the mines and district,I suggest Howard (1979),and for a recent summary...of the many species at this contact-metamorphic deposit. She also collected specimens of the same species...valuable to one who studies the paragenesis of a deposit. Some collect indiscriminately, which is fine when...1987). References Howard, J. M, 1979, Antimony district of Southwest Arkansas: Arkansas Geol. Comm., lrrfo...collecting microminerals in the Arkansas antimony district Rocks & Minerals,71:134-137. November 1998 ----- |
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