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本文参照 J·R·怀特和 B·W·查佩尔以物质来源不同将花岗岩分成 S 型和 I 型的意见,对云南花岗岩做了初步划分。认为腾冲、澜沧江、滇中、个旧四个不同时代各具特色的构造岩浆带,皆有其特定的构造部位。各带中均存在 S 型及 I 型两类不同物质来源的花岗岩类岩石。它们具有不同的岩石、矿物组合及地质特征,也有不同的成矿专属性。云南的 S 型花岗岩,与锡、钨,及锂、铍、铌、钽等成矿有关,一般是酸性——超酸性岩类组合,具有高硅、富钾、贫钙的特点;而 I 型花岗岩类则主要为中酸性或碱性岩类,与铜、钼或多金属硫化物矿化有关,具有低硅、富钠、富钙的特点。云南构造及岩浆活动十分复杂,花岗岩类形成环境差别很大,许多方面与怀特和查佩尔所得结论不一致,而本文作为初步实践的认识,定有很多不成熟之处,有待读者评议和今后实践中去修正。
In this paper, according to the opinions of J.W.Wright and B.W. Chapper, the granites are divided into S-type and I-type based on different material sources, the granites in Yunnan Province are preliminarily divided. The Tectonite, Lancangjiang, Dianzhong, Gejiu four distinctive tectonic magmatic belts of different ages all have their own specific structural parts. There are two types of S-type and I-type granite-type rocks from different sources. They have different rock, mineral assemblages and geological features, as well as different mineralization specificity. S-type granites in Yunnan Province are related to the mineralization of tin, tungsten, lithium, beryllium, niobium and tantalum, and are generally characterized by acidic-super-acidic rock assemblages with high silicon, potassium-rich and calcium- The granites are mainly acidic or alkaline rocks, which are related to the mineralization of copper, molybdenum or polymetallic sulphides, and have the characteristics of low silicon, rich in sodium and rich in calcium. The tectonic and magmatic activities in Yunnan are very complicated and the environment for the formation of granitoids is quite different. There are many inconsistencies between the conclusions drawn by White and Chaptel, and the imformation of this article as a preliminary practice has many immature points to be judged by readers and future practice To amend.