| 碱性玄武岩中钛金云母巨晶的研究 |
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| 引用本文： | 齐进英,肖增岳.碱性玄武岩中钛金云母巨晶的研究[J].矿物学报,1985(4). |
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| 作者姓名： | 齐进英 肖增岳 |
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| 作者单位： | 中国科学院地质研究所 北京
(齐进英)，中国科学院地质研究所 北京(肖增岳) |
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| 摘 要： | 钛金云母巨晶产于安徽当涂釜山的碱性玄武岩中,在该岩石中还含有尖晶石二辉橄榄岩包体和辉石、石榴石和歪长石巨晶。 本文提供了钛金云母的光性特征、矿物化学和波谱学等方面的资料。其化学特征是富钛和铁。其折光率显著高于各种产状的金云母。X射线衍射谱的特征是基底奇数层反射强,而偶数层反射不明显。多型为3T型。这些反映了钛金云母在高压条件形成。
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| 关 键 词： | 碱性玄武岩 钛金云母 巨晶 安徽 |
A STUDY OF TITANOPHLOGOPITE MEGACRYSTS IN ALKALI BASALTS |
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| Qi Jinying Xiao Zengyue.A STUDY OF TITANOPHLOGOPITE MEGACRYSTS IN ALKALI BASALTS[J].Acta Mineralogica Sinica,1985(4). |
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| Authors: | Qi Jinying Xiao Zengyue |
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| Abstract: | Titanophlogopite megacrysts occur in alkali basalts in Mt. Fushan, Dangtu County, Anhul Province. Inclusions of spinel-lherzolite and megacrysts of augite, garnet and anorthoclase are recognized in the rocks as well.Optical, minerochemical and wave-spectroscopic data on the Ti-phlogopite are presented in this paper. Chemically it is characterized as being Ti- and Fe~*-rich. Its refractive index is obviously higher than that of phlogopites of various occurrences. X-ray diffraction pattern features strong reflection on the odd basement layers and weak one on the even basement layers. Polytype is 3T. These characteristics show that the titanophlogopite was formed under high pressure condition. |
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| Keywords: | alkali basalt titanophlogppite megacryst Anhui |
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