| 海南蓬莱矿区含蓝宝石玄武岩的岩石学和岩石化学特征 |
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| 引用本文： | 兰田文,邓燕华. 海南蓬莱矿区含蓝宝石玄武岩的岩石学和岩石化学特征[J]. 桂林工学院学报, 1991, 0(Z1) |
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| 作者姓名： | 兰田文 邓燕华 |
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| 作者单位： | 桂林冶金地质学院地质矿产勘查系(兰田文)，桂林冶金地质学院地质矿产勘查系(邓燕华) |
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| 摘 要： | 通过海南蓬莱蓝宝石矿区含矿与不含矿玄武岩岩石学、岩石化学特征对比,总结出该区含矿玄武岩的特征:(1)基质矿物(主要是长石)结晶较细;(2)富含深源二辉橄榄岩包体;(3)斑状结构,斑晶主要为橄榄石和辉石,且主要为地幔岩残晶;(4)贫硅、富碱、K质较高。含蓝宝石玄武岩岩浆上升速度快是造成上述岩石学特征的原因。
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| 关 键 词： | 蓝宝石 玄武岩 岩石学 岩石化学 海南 |
PETROLOGICAL AND PETROCHEMICAL CHARACTERISTICS OF SAPPHIRE-BEARING BASAITS IN PENGLAI SAPPHIRE DEPOSIT,HAINAN |
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| Lan Tianwen,Deng Yanhua. PETROLOGICAL AND PETROCHEMICAL CHARACTERISTICS OF SAPPHIRE-BEARING BASAITS IN PENGLAI SAPPHIRE DEPOSIT,HAINAN[J]. Journal of Guilin University of Technology, 1991, 0(Z1) |
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| Authors: | Lan Tianwen Deng Yanhua |
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| Affiliation: | Lan Tianwen,Deng Yanhua Department of Exploration Geology,Guilin College of Geology |
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| Abstract: | By making a comparison between basalts bearing or not sapphire in petrology and petrichem-istry in Penglai sapphire deposit,Hainan the characteristics of sapphire--bearing basalts are sum-marised as follows: 1)Minerals in groundmass of sapphire--bearing basalts mainly plagioclases arefiner--grained; 2)A great deal of spinel lherzolite inclusions derived from the mantle are rich; 3)Porphyritic texture, phenocrysts are mainly olivine and pyroxene in the main form of relicts ofmantle--derived rocks; 4)Lower silicon, richer alkaline and higher potassium. The fast ascendingvelocity of sa pphire--bearing basaltic magma contributed to above--mentioned petro logicalcharacteristics. |
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| Keywords: | sapphire basalt petrology petrochemistry Hainan |
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