Colloform high-purity platinum from the placer deposit of Koura River (Gornaya Shoriya, Russia). / Nesterenko, G. V.; Zhmodik, S. M.; Airiyants, E. V. et al.
In: Ore Geology Reviews, Vol. 91, 01.12.2017, p. 236-245.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Colloform high-purity platinum from the placer deposit of Koura River (Gornaya Shoriya, Russia)
AU - Nesterenko, G. V.
AU - Zhmodik, S. M.
AU - Airiyants, E. V.
AU - Belyanin, D. K.
AU - Kolpakov, V. V.
AU - Bogush, A. A.
N1 - Publisher Copyright: © 2017 Elsevier B.V.
PY - 2017/12/1
Y1 - 2017/12/1
N2 - A microinclusion of colloform high-purity platinum in a grain of platinum-group minerals (PGM) from the alluvial gold-bearing placer deposit in the south of Western Siberia (Russia) was detected and characterized for the first time. It is different in composition, texture, and conditions of formation from high-purity platinum of other regions described in the literature. The main characteristics of investigated high-purity platinum are colloform-layered texture, admixture of Fe (0.37–0.78 wt%), and paragenesis of Cu-rich isoferroplatinum, hongshiite, and rhodarsenide. The PGM grain with high-purity platinum is multiphase and heterogeneous in texture. It is a product of intensive metasomatic transformation of Cu-rich isoferroplatinum (Pt3(Fe0.6Cu0.4)). The transformation was carried out in two stages: 1 – copper stage including three substages (Cu-rich isoferroplatinum, copper platinum and hongshiite); and 2 – arsenic (rhodarsenide). The formation of high-purity platinum was separated in time from the formation of isoferroplatinum and was carried out by precipitation from postmagmatic solutions.
AB - A microinclusion of colloform high-purity platinum in a grain of platinum-group minerals (PGM) from the alluvial gold-bearing placer deposit in the south of Western Siberia (Russia) was detected and characterized for the first time. It is different in composition, texture, and conditions of formation from high-purity platinum of other regions described in the literature. The main characteristics of investigated high-purity platinum are colloform-layered texture, admixture of Fe (0.37–0.78 wt%), and paragenesis of Cu-rich isoferroplatinum, hongshiite, and rhodarsenide. The PGM grain with high-purity platinum is multiphase and heterogeneous in texture. It is a product of intensive metasomatic transformation of Cu-rich isoferroplatinum (Pt3(Fe0.6Cu0.4)). The transformation was carried out in two stages: 1 – copper stage including three substages (Cu-rich isoferroplatinum, copper platinum and hongshiite); and 2 – arsenic (rhodarsenide). The formation of high-purity platinum was separated in time from the formation of isoferroplatinum and was carried out by precipitation from postmagmatic solutions.
KW - Alluvial placer
KW - Cu-rich isoferroplatinum
KW - Gornaya Shoriya
KW - High-purity platinum
KW - Hongshiite
KW - Platinum-group elements (PGE)
KW - Platinum-group minerals (PGM)
UR - http://www.scopus.com/inward/record.url?scp=85031429543&partnerID=8YFLogxK
U2 - 10.1016/j.oregeorev.2017.10.003
DO - 10.1016/j.oregeorev.2017.10.003
M3 - Article
AN - SCOPUS:85031429543
VL - 91
SP - 236
EP - 245
JO - Ore Geology Reviews
JF - Ore Geology Reviews
SN - 0169-1368
ER -
ID: 9409540