Alteration Characteristics of K-Feldspar in Leimengou Porphyry Mo Deposit in Western Henan Province and Its Insight into Metallogenetic Process
详细信息
- 责任者：Chen Xiaodan (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Ye Huishou
- 刊名：Geoscience
- 出版年：2012
- 卷期：26(3)
- 关键词：斑岩钼矿床 ; porphyry molybdenum deposit ; 河南 ; Henan Province
- 页码：p.478-488
- 图表：6 illus., 4 tables, 51 refs.
- 分类号：1001
- issnNo：ISSN1000-8527
- isbnNo：CN11-1856/P
摘要
Summary name="EnDivSummary">Leimengou Mo deposit in the western Henan Province is a typic porphyry Mo deposit in East Qinling molybdenum belt. The deposit pervasively develops K-feldspar alteration, This paper analyzed the alteration features of K-feldspar, composition of altered minerals, X-ray powder diffraction and Pb isotope composition of types of altered K-feldspar. The compositions of feldspar show that K2O is the main compontent. X-ray powder diffraction data suggest that K-feldspar are andesine-microcline with alteration temperatures of 310~418 ℃. Pb isotope composition show that K in K-feldspar originates from mantle. According to the mantle derived characteristics of the ore-forming fluid, combining with the geochemistry of Mo, the authors conducted that the K-feldspar alteration has a good interpretation on the metallogenic process.
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