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澜沧江变质带在云南境内长达770公里。带内火山喷发与岩浆侵入活动、变质作用及多旋回沟造变动强烈而频繁,是滇西重要的金属成矿带。 1978年以来,我队先后在澜沧江变质带的南段,临沧花岗岩以西之澜沧群内发现蓝闪石、3T 型多硅白云母及冻蓝闪石、钠闪石、黑硬绿泥石等高压低温标志矿物组合。蓝闪片岩带呈近南北向延绵已达100公里以上,并与蛇绿岩套共生。临沧花岗岩岩基及其以东
Lancang metamorphic belt in Yunnan Province up to 770 km. In-band volcanic eruptions and magmatic intrusions, metamorphism and polycyclic furrows make strong and frequent changes and are important metallogenic belt in western Yunnan. Since 1978, our team has successively discovered the marbles in the southern segment of the Lancangjiang metamorphic belt and the Lancang Group to the west of the Lincang granite, and the 3T-type polysiliciferous muscovite and the cristobalite, sodium amphibole and black hard chlorite Contour pressure low temperature logo mineral combination. Blue flash rock belt is near the north-south stretch has reached 100 km above, and coexistence with the ophiolite suite. Lincang granite basement and its east