Mineralogy and geochemistry of gold-bearing arsenian pyrite from the Shuiyindong Carlin-type gold deposit,Guizhou, China: implications for gold depositional processes
文献类型：期刊论文
| 作者 | Hongtao Zhang; Ruizhong Hu; Xi Ge; Bin Xia; Yanyan Chen; Chen Zhu; Wenchao Su |
| 刊名 | Mineralium Deposita
 |
| 出版日期 | 2012 |
| 卷号 | 47期号:6页码:653-662 |
| 关键词 | Gold Arsenian Pyrite Carlin-type Shuiyindong Guizhou China |
| 英文摘要 | Abstract in a structurally bound Au complex in arsenian pyrite. Geochemical modeling using the laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS) analysis of fluid inclusions for the major ore forming stage shows that the dominant Au species were Au(HS)2鈭 (77%) and AuHS(aq)0 (23%). Gold-hydroxyl and Gold-chloride complexes were negligible. The ore fluid was undersaturated with respect to native Au, with a saturation index of 鈭3.8. The predominant As species was HAsO30. Pyrite in the Shuiyindong deposit shows chemical zonation with rims richer in As and Au than cores, reflecting the chemical evolution of the ore-bearing fluids. The early ore fluids had relatively high activities of As and Au, to deposit unzoned and zoned arsenian pyrite that host most gold in the deposit. The ore fluids then became depleted in Au and As and formed As-poor pyrite overgrowth rims on gold-bearing arsenian pyrite. Arsenopyrite overgrowth aggregates on arsenian pyrite indicate a late fluid with relatively high activity of As. The lack of evidence of boiling and the low iron content of fluid inclusions in quartz, suggest that iron in arsenian pyrite was most likely derived from dissolution of ferroan minerals in the host rocks, with sulfidation of the dissolved iron by HS-rich ore fluids being the most important mechanism of gold deposition in the Shuiyindong Carlin-type deposit. |
| 学科主题 | 矿床地球化学 |
| 语种 | 英语 |
| 公开日期 | 2017-12-12 |
| 源URL | [http://ir.gyig.ac.cn:8080/handle/352002/6737]  |
| 专题 | 地球化学研究所_矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文 地球化学研究所_矿床地球化学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Hongtao Zhang,Ruizhong Hu,Xi Ge,et al. Mineralogy and geochemistry of gold-bearing arsenian pyrite from the Shuiyindong Carlin-type gold deposit,Guizhou, China: implications for gold depositional processes[J]. Mineralium Deposita,2012,47(6):653-662. |
| APA | Hongtao Zhang.,Ruizhong Hu.,Xi Ge.,Bin Xia.,Yanyan Chen.,...&Wenchao Su.(2012).Mineralogy and geochemistry of gold-bearing arsenian pyrite from the Shuiyindong Carlin-type gold deposit,Guizhou, China: implications for gold depositional processes.Mineralium Deposita,47(6),653-662. |
| MLA | Hongtao Zhang,et al."Mineralogy and geochemistry of gold-bearing arsenian pyrite from the Shuiyindong Carlin-type gold deposit,Guizhou, China: implications for gold depositional processes".Mineralium Deposita 47.6(2012):653-662. |
入库方式： OAI收割
来源：地球化学研究所
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