Geological Characteristics and Ore Genesis of Deshengtai Mirabilite Ore Deposit in Dalad County, Inner Mongolia
详细信息
- 责任者：Xu Dewei (Inner Mongolia Mining Development Limited Liability Company ; Hohhot 010020 ; China) ; Wei Xiaogang
- 刊名：Geology and Mineral Resources of South China
- 出版年：2013
- 卷期：29(3)
- 关键词：芒硝矿床 ; mirabilite deposit ; 内蒙古 ; Inner Mongolia
- 页码：p.227-233
- 图表：3 illus., 1 table, 14 refs.
- 分类号：1002
- issnNo：ISSN1007-3701
- isbnNo：CN42-1417/P
摘要
The mirabilite ore in Dalad county is the largest mirabilite ore with high quality in the world,which occured in the middle and upper strata of the Pleistocene.There are 3 ore beds which are named as I,II and III.The ore bodies are occurred as bed and nearly being parallel.The main ore bed is body I,with the thickness of 5.16 ～ 23.92 m,which averaged to be 13.89 m,and the coefficient of variation of thickness is 43.23%.The grade of Na2 SO4 is in the range of 21.87% ～ 40.25%,which averaged to be 33.81%,and the coefficient of variation of the grade of Na2 SO4 is 12.65%.The constituent of the ore is relatively simple,and the the intercalated beds are much fewer.The constituents of the ore are mainly soluble salt and insoluble materials(silt and sand),and 99% of the soluble salt is composed of the sodium sulfate decahydrate with the chemical formula Na2 SO4 ·10H2 O.The genesis of the solid mirabilite ore is assumed to be from chemical deposit of the lake being with the modern salt lake facies occurred in the inland clastic rock sediments.
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