| 中国滑石矿床的含矿建造类型 |
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| 引用本文：.1992.Types of ore-bearing formation for talc deposits in china[J].Mineral Deposits,11(1):85~92 |
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| 中文摘要:本文研究和总结了我国滑石矿床的含矿建造类型，划分出：① 超基性岩含滑石建造；② 变质的镁质碳酸盐岩含滑石建造；③ 钙镁质碳酸盐岩含滑石建造；④ 镁质粘土岩含滑石建造等4种滑石矿床含矿建造。阐述了不同含矿建造的主要特征以及滑石的成矿作用特点，指出了滑石成矿作用的发生与否主要与下列因素有关：① 岩石条件；② 物质来源；③ 建造类型和岩石组合类型；④ 介质条件；⑤ 构造条件诸因素控制的。 |
| 中文关键词:滑石矿床 含矿建造 成矿作用 |
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| Types of ore-bearing formation for talc deposits in china |
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| Abstract:Geological environments for the formation of talc deposits have been truly recorded in ore-bearing formations. The study and classification of talc-bearing formations are theoretically helpful to the interpretation of the formation mechanism and evolutionary process of talc deposits and, moreover, might point out the possibility of finding talc deposits in simitar formations. On the basis of available data, 4 talc-bearing formations may be distinguished in china:① talc-bearing ultrabasic formation;② talc-bearing metamorphic magnesian carbonate formation; ③ talc-bearing calcareous-magnesian carbonate formatiom; and ④ talc-bearing magnesian clay formation, of which the second one seems most important. According to formation environments and rock associations, it may be further divided into four sub-formations: ① dolomitic marble; ② dolomitic marble-magnesite; ③ dolomitic marble-spilite keratophyre; and ④ dolomitic marble-granite or diabase. Each formation is exemplified by typical ore deposits. In addition, this paper studies conditions and features of talc mineralization and analyses the relationship between talc deposits and ore-bearing formations. It is pointed out that the formation of talc deposits is controlled jointly by composition of ore-forming host rocks, types of ore-bearing formation, rock associations and tectonic settings. |
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