| 中国夕卡岩矿床中的角闪石 |
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| 引用本文：.2003.Amphiboles in Skarn Deposits of China[J].Mineral Deposits,22(4):345~359 |
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| 基金项目:国家自然科学基金项目(编号：40073016) |
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| 中文摘要:文章综合分析研究了中国21个夕卡岩矿床中的130个角闪石的成分分析数 据。根据夕卡岩类型及其伴生金属矿化的不同，把角闪石分为4大类：钙夕卡岩中的角闪石 多属钙角闪石，包括绿钙闪石、铁角闪石、镁绿钙闪石、铁浅闪石、阳起石、铁阳起石、铁 镁钙闪石和铁韭闪石等；镁夕卡岩中的角闪石以透闪石为主，局部有浅闪石或韭闪石；锰质 夕卡岩中的角闪石有锰质阳起石、锰质透闪石、锰直闪石和锰镁闪石；碱质夕卡岩中的角闪 石属钠_钙角闪石或钠角闪石类，包括钠透闪石、镁亚铁钠闪石、亚铁钠闪石、镁铝钠闪石 和镁钠闪石。碳酸盐围岩和有关侵入岩的成分对角闪石的类型、成分及其伴生金属矿化起重 要的作用。 |
| 中文关键词:矿物学 闪石类型 成分特征 夕卡岩矿床 中国 |
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| Amphiboles in Skarn Deposits of China |
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| Abstract:Based on 130 analyses of amphiboles from 21 skarn deposits in China, the authors have studied their types, optical properties, composition characteristics, and parageneses. Different skarn types have different definite amphibole variaties a nd associated mineralizations: amphiboles in calcic skarns mostly belong to calc ic amphiboles such as hastingsite, chlorian hastingsite, potassian hastingsite, potassic hastingsite, magnesiohastingsite, ferrohornblende, chlorian ferrohornbl ende, fluorian ferrotschermakite, ferro_edenite, actinolite, and potassian ferro pargasite. The associated mineralizations may have such components as Fe, Cu, Au , Sn, Mo and B. Amphiboles in magnesian skarns are mainly tremolite and locally edenite and pargasite associated with Fe, Cu, Au, Sn, Mo, B mineralizations. In manganoan skarns, amphiboles may have manganoan actinolite, manganoan tremolite, mangano_anthophyllite, and manganocummingtonite associated with Pb-Zn-Ag minera lization. Amphiboles in alkaline skarns are of sodic_calcic and sodic types and consist of richterite, fluororichterite (fluorian richterite), arfvedsonite, mag nesio_arfvedsonite, potassic magnesio_arfvedsonite, fluorian magnesioriebeckite and fluorian_potassic eckermannite associated with U, Th, REE, Fe, Nb mineraliza tions. The compositions of carbonate wall rocks and related intrusions must have played important roles in determining types and compositions of amphiboles as w ell as their associated mineralizations. |
| keywords:mineralogy, amphibole types, composition characteristics, skarn deposits, China |
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