The redistribution of platinum-group elements and platinum-group minerals in the weathered chromitities of the Lower and Middle Group chromitites of the Bushveld Complex and the mineralogical siting of Ru

被引：0

作者：

Junge, Malte ^{[1
]}

Bachmann, Kai ^{[2
]}

Kotze, Emmylou ^{[3
]}

Oeser-Rabe, Martin ^{[3
]}

机构：

[1] Univ Freiburg, Freiburg, Germany

[2] Helmholtz Inst Freiberg Resource Technol, Freiberg, Germany

[3] Leibniz Univ Hannover, Hannover, Germany

来源：

MINERAL RESOURCES TO DISCOVER, VOLS 1-4 | 2017年

关键词：

SOUTH-AFRICA; GREAT DYKE; RESOURCES; LATERITES; RUTHENIUM; PALLADIUM; ZIMBABWE; ORES; PGE;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The chromitite seams of the Lower Group (LG) and Middle Group (MG) of the Bushveld Complex in South Africa contain elevated Pt and Pd concentrations. So far, only limited work has been done on the distribution of platinum-group elements (PGE) and platinum-group minerals (PGM) in these ores. In particular, the knowledge about the effects of weathering of PGM and the redistribution of PGE in these ores are rare. Previous studies showed that the main PGM are PGE-sulfides (cooperite-braggite, malanite, laurite), followed by PGE-sulfarsenides, sperrylite and Pt-Fe alloys. During weathering PGM are largely destroyed and only relict PGM are observed. Platinum-group minerals are weathered along small cracks and neo-formation of PGM may take place. Additionally, the mineralogical siting of Ru within chromitites is studied here. It was shown by- LA-ICP-MS work that chromite can host some 100s-ppb of Ru.

引用

页码：467 / 470

页数：4

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