| 火山岩中莫来石的发现 |
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| 引用本文： | 曾广策,覃业东.火山岩中莫来石的发现[J].矿物学报,1993,13(1):84-86. |
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| 作者姓名： | 曾广策 覃业东 |
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| 作者单位： | 中国地质大学，中国地质大学，中国地质大学，海南地质大队 武汉 430074，武汉 430074，武汉 430074，海南 |
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| 摘 要： | 莫来铁尖晶岩中的莫来石是首次发现的一种火山岩型莫来石。在全岩X射线粉晶衍射图上莫来石的d值(nm)为:0.5378(5),0.3428(9),0.3385(10),0.2693 (4),0.2545(5),0.2295 (2),0.1601 (2),0.1542 (4),0.1443 (2)。电子探针分析结果,莫来石的成分(%)为:SiO_2 28.96,TiO_2 0.53,Al_2O_3 67.13,FeO 3.06,MnO 0.05.MgO 0.02,Na_2O 0.21,K_2O 0.02,Cr_2O_3 0.05, NiO 0.02。这种莫来石是从玄武岩浆演化后期产生的富Al_2O_3、FeO(Fe_2O_3)和贫SiO_2的莫来铁尖晶岩浆中直接结晶而成的。
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| 关 键 词： | 莫来石 火山岩 海南 |
THE DISCOVERY OF MULLITE IN VOLCANIC ROCKS |
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| Zeng Guangce Pan Baoming Shen Shangyue.THE DISCOVERY OF MULLITE IN VOLCANIC ROCKS[J].Acta Mineralogica Sinica,1993,13(1):84-86. |
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| Authors: | Zeng Guangce Pan Baoming Shen Shangyue |
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| Abstract: | A volcanogenic mullite in mullihercynite has been discovered for the first time. The d values from X-ray powder diffraction analysis are (nm): 0.5378(5); 0.3428 (9); 0.3385 (10); 0.2693 (4); 0.2545 (5); 0.2295 (2) ; 0.1601 (2); 0.1542 (4) and 0.1443(2). The chemical composition(%) of the mullite is: SiO_2 28.96; TiO_2 0.53; Al_2O_3 67.13; FeO_3.06; MnO0.05; MgO 0.02;Na_2O0.21; K_2O 0.02; Cr_2O_3 0.05; NiO 0.02. The mullite was crystallized directly from mullihercynite magma rich in Al_2O_3, FeO(Fe_2O_3) and poor in SiO_2 generated in the late stage of the evolution of basalt magma. |
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| Keywords: | mullite volcanic rock Hainan |
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