Occurrence and Distribution Characteristics of Pyrite in Yangshan Gold Ore Belt, Gansu Province
详细信息
- 责任者：Tao Hong (The Geophysical Exploration Center ; CEA ; Zhengzhou 450002 ; China) ; Wu Hao
- 刊名：Contributions to Geology and Mineral Resources Research
- 出版年：2013
- 卷期：28(1)
- 页码：p.65-69
- issnNo：ISSN1001-1412
- isbnNo：CN12-1131/P
摘要
Yangshan gold deposit in Gansu Province is the largest one discovered in China so far.6 ore blocks are located in Devonian System.Metal minerals are mainly pyrite and arsenopyrite.Pyrite is mainly in three occurrences i..e.disseminated micro-grained pyrite,sub-euhedral pyrite assemblage and big euhedral single pyrite crystal.Such pyrites are mainly distributed in phyllite,granitic diorite and quartz veins occurring in multi-stages and types.Au mineralization is related to the first stage disseminated medium-fine grained pyrite in quartz vein.Pyrite is one of the important gold carriers.Native gold occurs as micro-grain in cracks of pyrite and interstitial of pyrite crystals.Occurrence and distribution study of pyrite is of significance to further prospecting in the mining district.