| Abstract: | Platinum-group minerals occur in significant proportions in placer deposits in several localities in South Kalimantan. They consist of Pt-Fe alloy that may be intergrown with or contain inclusions of Ir-Os-Ru alloy, laurite and chromite. Alluvial PGM found along Sungai Tambanio are in part derived from chromatite schlieren in dunitic bodies intruded into clinopyroxene cumulates that may be part of an Alaskan-type ultramafic complex. A chromitite schlieren in serpentinite from one of these dunitic bodies is anomalous in PGE. The chondrite-normalized PGE pattern for this rock, pan concentrates from this area, and PGM concentrates from diamond-Au-PGM placer deposits have an "M‘-shaped pattern enriched in Ir and Pt that is typical of PGE-mineralization associated with Alaskan-type ultramafic complexes. -Authors |
| Genre: | Article |
| ProdID: | 70016862 |
| Citation Author: | Zientek, M. L. |
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| Citation End Page: | 417 |
| Citation Issue: | 3 Pt2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Australian Journal of Earth Sciences |
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| Citation Number Of Pages: | 13 |
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| Citation Search Results Text: | Placer and lode platinum-group minerals in south Kalimantan, Indonesia: evidence for derivation from Alaskan-type ultramafic intrusions; 1992; Article; Journal; Australian Journal of Earth Sciences; Zientek, M. L. |
| Citation Start Page: | 405 |
| Citation Volume: | 39 |
| Citation Year: | 1992 |
| Type: | citation/reference |
| Text: | Placer and lode platinum-group minerals in south Kalimantan, Indonesia: evidence for derivation from Alaskan-type ultramafic intrusions; 1992; Article; Journal; Australian Journal of Earth Sciences; Zientek, M. L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1992 00:00 -0600 |
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