| 广西南源洞硅灰石矿床地质特征及成因 |
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| 引用本文： | 张良钜. 广西南源洞硅灰石矿床地质特征及成因[J]. 桂林工学院学报, 1992, 0(2) |
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| 作者姓名： | 张良钜 |
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| 作者单位： | 桂林冶金地质学院地质矿产勘查系 |
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| 摘 要： | 硅灰石矿体产出在下石炭系岩关阶(C_1y)硅质灰岩外接触带中。成矿作用以接触热变质作用为主,并伴随接触交代作用的叠加。硅灰石成分中的CaO,SiO_2主要来自硅质灰岩中,与岩体无明显关系。硅灰石的形成是硅质灰岩中的O,Si,Ca在岩浆提供热源条件下发生活化就地固相扩散而重新组合的产物。本区硅灰石属低温相三斜Tc型,可用作陶瓷原料及烧制釉面砖。
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| 关 键 词： | 接触变质作用 热力变质岩 矿床成因 广西/硅灰石矿床 |
THE GEOLOGICAL CHARACTERISTICS AND GENESIS OF THE WOLLASTONITE DEPOSIT IN NANYUANDONG, GUANGXI |
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| Zhang Liangju. THE GEOLOGICAL CHARACTERISTICS AND GENESIS OF THE WOLLASTONITE DEPOSIT IN NANYUANDONG, GUANGXI[J]. Journal of Guilin University of Technology, 1992, 0(2) |
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| Authors: | Zhang Liangju |
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| Affiliation: | Zhang Liangju Department of Exploration Geology,Guilin College of Geology |
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| Abstract: | The wollastonite orebody occurs in the exo-contact zone of siliceouslimestone of Lower Carboniferous Yanguan Stage. The mineralization tookplace mainly as contact heat metamorphism through superimposition by subsequent contact metasomatic metamorphism. CaO and SiO_2 are derivedmainly from siliceous limestone and are obviously unrelated to quartzmonzonite. The wollastonite was formed by recomposing through solid spreadingof O, Si and Ca in the siliceous limesitone under the condition of magmaheat resources. The wollastonite possesses triclinicity of lower temperaturefacies. It can be used to building and ceramic material. |
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| Keywords: | contact metamorphism thermally metamorphosed rocks genesis of ore deposit Guangxi / wollastonite deposit |
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