Geological Characteristics of Skarn Iron Deposits and Their Mineralization Material Source in the
详细信息
- 责任者：Zhang Haidong (Resource College of Chang’an University ; Xi’an 710054 ; China) ; Liu Jianchao
- 刊名：Geology and Prospecting
- 出版年：2010
- 卷期：46(4)
- 关键词：铁矿 ; iron ores ; 山西 ; Shanxi Province
- 页码：p.634-642
- 图表：7 illus., 4 tables, 21 refs.
- 分类号：1001
- issnNo：ISSN0495-5331
- isbnNo：CN11-2043/P
摘要
The skarn-type iron deposits mainly occur in the contact zone between Yanshan intermediate rocks and Middle Ordovician carbonate rocks in the Ping Shun area of Shanxi Province. The mineralization and alteration show pronounced zoning, and albitization is an important ore-hunting indicator. The Pb isotopic compositions of various kinds of samples from the deposit and the chemical composition of part 7th hole’s core samples in Beiluoxia show that the ore material of magnetite originated from intermediate intrusive rocks of the middle stage as well as ultramafic-mafic intrusive rocks of the early stage. Ultramafic-mafic intrusive rocks are assimilated by intermediate rocks, leading to lots of iron entering the suldenite of late stage. The later sodic alteration caused iron precipitation and then formation of magnetite, which served as the material source for mineralization indirectly.