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变碳酸盐的浅色软玉,是石料加工工业的稀少而贵重的原料。在苏联境内的河中游及和河流域已查明有浅色软玉矿床。研究地区面积的70％左右是花岗岩。在花岗岩与白云石大理岩的接触带上,发育有中温含软玉钙质矽卡岩。其典型的交代柱状剖面图如下:黑云母花岗岩→近矽卡岩的花岗正长岩→辉石-角闪石-斜黝帘石矽卡岩→含软玉的方解石-透闪石矽卡岩→白云石大理岩。花岗岩不仅起着流体源的作用,而且也是保证交代反应过程进行完全的温度场的
Carbonate light nephrite, is a rare and precious raw material for the stone processing industry. Light-nephrite deposits have been identified in the middle reaches of the river and in the Hehe basin in the Soviet Union. About 70% of the study area is granite. In the contact zone of granite and dolomite marble, the development of moderate temperature with soft jade calcareous skarn. Its typical metasomatic columnar profile is as follows: biotite granite → granodiorite near the skarn → pyroxene-hornblende-oblique zonated skarn skarn → calcite with nephrite - tremolite-skull Rock → Dolomite marble. Granite not only plays the role of fluid source, but also ensures the complete reaction of the reaction temperature field