| 四川石棉县大河坝自然铂矿床地质特征浅析 |
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| 引用本文：骆耀南,何虹,李云泉.2004.四川石棉县大河坝自然铂矿床地质特征浅析[J].地球学报,25(5):529-534. |
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| 基金项目:“大规模成矿作用及大型矿集区预测”项目(编号:G1999043203)，地质大调查项目(编号:200310200002课题) |
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| 中文摘要:石棉县大河坝自然铂矿床位于扬子地台西部边缘康滇南北基底隆起带上。矿体赋存于康定杂岩中前晋宁期层状辉石岩-辉长岩残留体中，呈似层状、网脉状产出；铂族元素矿物呈单一的自然铂形式产出，赋存于蚀变辉石、斜长石矿物粒间；主要伴生矿物为磁铁矿、钛铁矿，少量黄铁矿和微量黄铜矿。初步推测，矿床属与层状铁质基性一超基性岩有关、经后期构造一热液改造形成的独特自然铂矿床。 |
| 中文关键词:扬子地台西缘 辉石岩辉长岩 自然铂矿床 |
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| Geology of the Daheba Native Pt Deposit in Shimian County, Sichuan Province |
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| Abstract:The Daheba Pt deposit in Shimian county, SichuanProvince, is located in the NS-trending Kangdian basement uplift zone. The orebodies in bedded andnetwork forms occur in Pre-Jinningian layered pyroxenite-gabbro remicts in Kangdian complex. PEM exists as native Pt in altered pyroxene and feldspar intergrains. Associated minerals are mainly magnetite and ilmenite, subordinately pyrite and rarely chalcopyrite. It is inferred that the deposit may be a unique native Pt oneassociated with layered basic-ultrabasic rocks and transformed by late structural-hydrothermal processes. |
| keywords:western margin of Yangtze platform pyroxenite-gabbro native Pt deposit |
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