Regularity of Wall Rock Alteration and Mineralization in the Tuanshan Ore Section, Guanfang Scheelite Ore Deposit,Wenshan,Yunnan

Abstract

Abstract:

The Wenshan scheelite ore deposit is a mediumlarge skarntype scheelite deposit, which has an intense wall rock alteration and zoning evidently. According to petrography and petrochemistry of alterated rocks, combining with the data of drill hole, three alteration zones are classified from the internal to external zoning of the rock body in the Tuanshan section: phlogopitionepidotization zone→dipsidizationhopfneritation zone→forsteritation zone. Based on transfer amounts of rocks components in all kinds of alteration zones, this paper regards that Al2O3,SiO2, TFe, K2O, Na2O coming from granitic thermal water of magma immigrate and MgO, CaO coming from limestone emigrate in the process of thermal water alteration and scheelite mineralization; therefore, we could draw conclusions: scheelite mineralization mainly occurs in dipsidization and hopfneritation zone; ore body attitude is consistent with dipsidizationhopfneritation zone; scheelitee mineralization is relatively weak inforsteritation zone; mineralization can be only found scattered in the phlogopitionepidotization zone. This research would provide important theory basis for ore deposit metallogenic rule and further searching for mine in Guanfang ore field in Wenshan.

Key words: scheelite deposit;mineralization alteration, metallogenic regularity;Guanfang, Wenshan, Yunnan Province

CLC Number:

P61867

ZHANG E-Hui, ZHANG Shi-Chao, FENG Meng-Gang, LIU Xiao-Bei, SUN Qi-Sen, ZHANG Bo. Regularity of Wall Rock Alteration and Mineralization in the Tuanshan Ore Section, Guanfang Scheelite Ore Deposit,Wenshan,Yunnan[J]. Geoscience, 2011, 25(4): 740-749.

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