کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4458601 1620962 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Platinum and palladium mobility in supergene environment: The residual origin of the Pirogues River mineralization, New Caledonia
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
پیش نمایش صفحه اول مقاله
Platinum and palladium mobility in supergene environment: The residual origin of the Pirogues River mineralization, New Caledonia
چکیده انگلیسی

Eluvial concentration of platinum-group minerals (PGM) has developed in the south of New Caledonia, from the weathering of a mafic and ultramafic cumulate. The platinum/palladium (Pt/Pd) ratio evolution from the bottom to the top of the weathering profile indicates a chemical mobilization of Pd in supergene environment. The examination by scanning electron microscopy of the residual PGM collected in the weathering profile and their chemical characterization by electronic microprobe show a preservation of the structure and chemical signature (in the core of the grains) of the fresh PGM. This clearly demonstrates that the PGM studied here are residual and are affected by dissolution process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Geochemical Exploration - Volume 88, Issues 1–3, January–March 2006, Pages 350–354
نویسندگان
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