| 陈玉水.西藏山南明则矿区斑岩型钼矿地质
特征及外围找矿预测[J].地质与勘探,2011,47(1):31-35 |
| 西藏山南明则矿区斑岩型钼矿地质
特征及外围找矿预测 |
| Geological Characteristics of the Mingze Porphyry Molybdenum Deposit andProspecting Prognosis in Its Adjacent Area, Shannan, Tibet |
| 投稿时间：2009-11-16 修订日期：2010-09-06 |
| DOI： |
| 中文关键词: 斑岩型钼矿 地质特征 找矿预测 冈底斯东段 明则 |
| 英文关键词: porphyry molybdenum deposit,geological characteristics,prospecting prognosis,Eastern part of the Gangdise belt,Mingze |
| 基金项目: |
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| 中文摘要: |
| [摘要]西藏山南明则矿区斑岩型钼矿床主要由一厚大隐伏的钼矿体组成,其上部覆盖着巨厚层
的古近系罗布莎群磨拉石建造。矿床赋存于冈底斯-念青唐古拉板片与喜马拉雅板片的结合带附近,赋
矿岩石为钾长花岗岩和二长花岗斑岩。自上而下递次出现青盘岩化、泥化、(黄铁)绢云母化或石英钾化
带。岩体侵入时代为古近纪渐新世。辉钼矿Re-Os 同位素等时线年龄值为30Ma。该矿的发现为冈底
斯成矿带南缘寻找同类斑岩型钼(铜)矿提供了新的线索。 |
| 英文摘要: |
| Abstract:The Mingze porphyry molybdenum deposit in Shannan, Tibet, is mainly composed of concealed massive molybdenum orebodies, which are
covered by thick Paleogene Luobusa molasse. It lies in the suture zone between the Gangdise - Nyainqentanglha plate and the Himalayan plate. The de鄄
posit is hosted in K-feldspar granite and monzonitic granite-porphyry. From the top to the bottom of the orebody, alteration varies from propylitic altera鄄
tion, argillization, phyllite-like alteration, pyritization to silicification and potassic alteration. The age of intrusive rock is Paleogene Oligocene, and the
Re-Os isotope age of molybdenite ore is 30Ma. The discovery of the Mingze deposit provides new helpful evidence for prospecting similar porphyry molyb鄄
denum (copper) deposit along the southern margin of the Gangdise metallogenic belt. |
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