Text

The Platinum group elements (Pt-Pd-Os-Ir-Ru-Rh)

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These are ring complexes several kilometers accross encased orogenic zone characterised by some units similar to those of Island arcs. No bedding is apparent in the field.Their age ranges from Devonian to Cretaceous. Their geochemistry (magma type) and metallogeny (PGE element distribution and type of metal) are largely unknown. The known mineralization associated with these complexes are exclusively placers with gold and in which alloys of Pt dominant over the other P.G.E mineral phases. These alloys are strongly ferromagnetic and can be easily separated : a guide for exploration.The present studies (Tulameen in British Colombia-Fifield in Australia) show intrusions with a core of dunite and clinopyroxenites and amphibolic and/or phlogopitic gabbros in outer parts. The chrome spine! does not give any ore, a few schlieren being rare exceptions. The P.G.E. minerals occur as inclusions in the chromite, or directly in dunite-linopyroxenite units. The P.G.E occur as very small grains, but some big nuggets of Pthave been found in several placers associated with these alaskan intrusions.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

PK No. 81

Penerbit

Bandung : Direktorat Sumber Daya Mineral., 1995

Deskripsi Fisik

27p,.ill. 22 x 19 cm

Bahasa

English

ISBN/ISSN

0216-0765

Klasifikasi

NONE

Tipe Isi

text

Tipe Media

unmediated

Tipe Pembawa

other (unmediated)

Edisi

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Subjek

Gold
Platinum

Info Detail Spesifik

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Pernyataan Tanggungjawab

Direktorat Sumber Daya Mineral

Informasi Lainnya

Kode Wilayah

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Pulau Dan Lembar Peta

Lainnya

Provinsi

Lainnya

Koordinat - Latitude

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Koordinat - Longitude

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