铱铑钌矿及其基质矿物——等轴铁铂矿  

IRIDRHODRUTHENUIM AND ITS MATRIX MINERAL——ISOFERROPLATINUM

作　　者：毛水和[1] 周学粹[1] 

机构地区：[1]地质矿产部矿产综合利用研究所

出　　处：《矿物学报》1989年第2期136-140,198,共5页Acta Mineralogica Sinica

摘　　要：在对等轴铁铂矿进行微区分析的过程中,发现其中有呈树枝或叶片状的因固溶体分离而形成的新的金属互化物矿物——铱铑钌矿,其化学式为Ru_(6·38)Rh_(1·70)Ir(1·20)Pt_(0·68)Os_(0·04)。In the detailed microanalysis of isoferroplatinum present in ultrabasic chromium ores from North Tibet, a new alloy mineral was identified, which is named iridrhodruthenium with a chemical formula of (Ru_(6.38)Rh_(1.70)Ir_(1.20)Pt_(0.68) Os_(0.04). The mineral is thought to be the product of exsolution in isoferroplatinum. Iridrhodruthenium is leaf-or branch-shaped and has optical properties distinct from those of the matrix mineral. It is indicated that some platinumgroup elements can form solid solutions at high temperatures. Due to the incompatibility of these elements with changing temperature and pressure, some different mineral phases distinct in chemical composition, physical properties and structure are formed.

关 键 词：铁 铂 依铑钌 金属矿物 固溶体 

分 类 号：P578.12[天文地球—矿物学]