sakhtehesar山火成岩中火成岩与热液黑云母化学成分的比较

Journal of Economic Geology Pub Date : 2010-01-30 DOI:10.22067/ECONG.V1I1.3684

F. Ayati, S. Mahdevari

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引用次数: 0

摘要

Sakhtehesar山位于乌鲁木齐- dokhtar岩浆带，由侵入了古新世火山和火山碎屑的火山和次火山岩(上新世安山岩-英安岩)组成。区内主要有钾蚀变带、叶基蚀变带和丙基蚀变带。本文研究了岩浆岩和原生黑云母的矿物化学特征，以及钾蚀变带和植物蚀变带中黑云母的矿物化学特征。研究表明，该区原生黑云母和次生黑云母具有明显的差异性，与钾蚀变有关的热液流体与与叶状蚀变带有关的热液流体具有明显的差异性。

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COMPARISON BETWEEN THE CHEMISTRY OF IGNEOUS AND HYDROTHERMAL BIOTITE IN THE IGNEOUS ROCKS OF SAKHTEHESAR MOUNTAIN

Sakhtehesar mountain is located in Urumieh-Dokhtar magmatic belt and is composed of volcanic and subvolcanic rocks (Pliocene andesite to dacite) which intruded the volcanics and pyroclastics of Paleocene age. Three alteration zones including potassic, phyllic and propylitic are recognized in the area. In this paper, the mineral chemistry of magmatic and primary biotite and the mineral chemistry of biotite in potassic and phyllic alteration zones have been studied. Investigations show that primary and secondary biotites are different from each other and hydrothermal fluids associated with the potassic alteration are distinctively different from the fluids associated with the phyllic alteration zone in the area.

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来源期刊

Journal of Economic Geology Earth and Planetary Sciences-Economic Geology

CiteScore

0.60

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0.00%

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