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岩石化学是研究各种地质过程的本质联系和演化规律的重要手段与方法.据国外统计,1841～1913年,全世界完成火成岩分析11024件,加拿大地质调查所1846～1954年分析了1300件,1954～64年分析了6200件,美国1966～68年平均每年分析2800件.随着我国地质科学的迅速发展,对岩石化学分析的要求与日俱增.本文着重讨论蚀变对岩石化学研究的影响.一要求与现状根据岩石学上的要求,在选择岩石化学资料时必须考虑:(1)岩石学的研究程度,样品的岩石名称、岩性及岩相划分、产
According to foreign statistics, from the period of 1841 to 1913, 11024 pieces of igneous rocks were analyzed in the world and 1,300 pieces of drawings were analyzed from 1846 to 1954 in Canadian Geological Survey. According to the statistics of foreign countries, 6200 were analyzed in 1954-64 and 2800 were analyzed annually in the United States from 1966 to 68. With the rapid development of geosciences in China, the requirements for petrochemical analysis are increasing day by day.This paper focuses on the influence of alteration on petrochemistry. Requirements and Status According to the requirements of petrology, the selection of petrochemical data must consider (1) the degree of petrology, the rock name, lithology and lithofacies classification of the sample