| 对柿竹园矽卡岩成因及其成矿作用的新认识 |
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| 引用本文： | 赵劲松 Newb.,RJ.对柿竹园矽卡岩成因及其成矿作用的新认识[J].矿物学报,1996,16(4):442-449. |
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| 作者姓名： | 赵劲松 Newb. RJ |
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| 作者单位： | 中国科学院广州地球化学研究所!广州，510640，美国阿拉斯加大学地质与地球物理系!费尔班克斯，99775 |
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| 摘 要： | 本文将报导柿竹园Ｗ，Ｓｎ，Ｍｏ，Ｂｉ矿床中矽卡岩矿物－石榴子石和辉石成分和石榴子石中熔融包裹体研究结果，对不同中段的１６块矽卡岩样品（９４％的标本采自第Ⅲ矿带）中的石榴子石和辉石进行了电子探针分析，共获得２３０个测点的数据，此外，还对上述中段大部分样品里的石榴子石和辉石进行了从边部到核心成分测定，共获得１３个样品的９７个测点数据，研究结果表明，绝大多数石榴子石属于含Ａｌｍ＋Ｓｐｓ＋Ｐｙｒ〈１３％（
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| 关 键 词： | 矽卡岩 成因 成矿作用 |
NOVEL KNOWLEDGE ON THE ORIGIN AND MINERALIZATION OF SKARNS FROM SHIZHUYUAN |
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| Zhao Jinsong.NOVEL KNOWLEDGE ON THE ORIGIN AND MINERALIZATION OF SKARNS FROM SHIZHUYUAN[J].Acta Mineralogica Sinica,1996,16(4):442-449. |
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| Authors: | Zhao Jinsong |
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| Abstract: | The compositions of garnet and pyroxene and the homogeneous temperatures of silicatemelt inclusions in garnets from skarn samples at the Shizhuyuan deposit are presented in this paper. Garnets and pyroxenes show a wide range of variations in composition,but most of the garnetsare andradite-grossular solid solutions containing less than 13 mol % (almandine+spessaritine+py-rope), whereas most pyroxenes are hedenbergite-diopside solid solutions containing.less than 11mol% johannesenite. The existence of silicate melt inclusions and melt-fluid inclusions in skarnsamples provides strong evidence for magma crystallization.A wide range of chemical compositions of main skarn minerals is probably caused by the diversity and inhomogeneity of magmatic composition. Magmatic metallization during skarn formationand superposition of postmagmatic ore formation, especially greisenization and f1uoritization, areprobably one of the main causes for the formation of super-large deposits. |
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| Keywords: | silicate melt inclusion compositions of garnet and pyroxene magmagenic skarn |
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