甘肃岷县马坞金矿地质特征与构造控矿模式

Abstract

Abstract:

Mawu gold deposit is similar to the gold deposits of Zhongchuan area with geological characteristics．In quartz reef of the main ore-forming stage of Mawu，δD is -78‰~-98‰，δ¹⁸O_SMOW is 18.0‰～20．2‰,δO_H2O is 0．45‰~8．54‰．It shows that ore-forming fluids is mixture water of the magmatic water，metamorphic water and little atmospheric water，magmatic water and metamorphic water is main，and has a small amount of atmospheric precipitation participated in．In quartz reef of the main ore—form ing stage，compose of δ³⁴S is +7．1‰～+7．9‰，average is+7．65‰，compose of 6 S show smaller change range．It shows the characteristics of form ation of stratum sulfur，ore-forming materials root in the Shujiaba formation.Theregional deep fault of F1 and anticline Mawu common control of Mawu gold deposit’s output，F1 is passage structure for ore materials，interlaminar fracture zones and tensile cranny of anticline Mawu and F1-derived secondary structural system is ore-hosting structure．The upbuilding of ore-controlling tectonic model is very important for next prospecting．

Key words: Geological characteristics, Ore-controlling tectonic, Interlaminar fracture zones, Mawu gold deposit, Gansu Province

CLC Number:

P618.51

DIAO Yu-Suo, XIAO Li, WANG Xiao-Jun, CUI Long, DIAO Chang-Cun. The Geological Characteristics and Ore-controlling Tectonic Model of Mawu Gold Deposit in M inxian，Gansu Province[J].J4, 2009, 17(6): 17-22.

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The Geological Characteristics and Ore-controlling Tectonic Model of Mawu Gold Deposit in M inxian，Gansu Province

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