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| THE ORDER DEGREE AND ORIGIN OF K-FELDSPAR PHENOCRYSTS IN THE MINERALIZED PORPHYRY OF THE WEILASITUO POLYMETALLIC DEPOSIT IN INNER MONGOLIA |
| YANG Fan1, WANG Yan1, FAN Zhi-yong2, FU Jun-yu1, NA Fu-chao1, ZHANG Guang-yu1, LIU Hang3 |
1. Shenyang Institute of Geology and Mineral Resources, CGS, Shenyang 110034, China;
2. Inner Mongolia Weilasituo Mining Co., Ltd., Chifeng 025350, Inner Mongolia Autonomous Region, China;
3. China University of Geosciences, Beijing 100083, China |
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Abstract The study of order degree and structural temperature of K-feldspar can provide significant information about the forming physicochemical conditions of deposit. Infrared spectroscopy is used to test the K-feldspar phenocrysts from the mineralized porphyry in the Weilasituo polymetallic deposit. The result shows that the order degrees range from 0.85 to 0.95, with triclinities of 0.7-0.9. The structural temperatures are 547.17-578.36℃, suggesting that the K-feldspar phenocrysts are microcline. It is confirmed that the K-feldspar is a product of hydrothermal alteration.
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Received: 22 August 2016
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2017, Vol. 26 
