| 刘久波,拜红奎,马伟,姜登峰.青海二道沟金矿床黄铁矿标型对矿床成因的指示[J].矿产勘查,2019,(12):2931-2935 |
| 青海二道沟金矿床黄铁矿标型对矿床成因的指示 |
| Indication of pyrite type to origin of Erdaogou gold deposit,Qinghai |
| 投稿时间：2019-08-27 |
| DOI： |
| 中文关键词: 矿床成因 黄铁矿标型 二道沟金矿床 青海 |
| 英文关键词: ore genesis, pyrite typomorphic,Erdaogou gold deposit,Qinghai |
| 基金项目:中国地质调查局地质调查项目(编号:1212011221135)资助。 |
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| 中文摘要: |
| 为查明二道沟金矿床成因,对其主要载矿矿物黄铁矿进行了标型研究。研究结果显示黄铁矿热电导型为P型占主导地位的N-P混合型,成矿温度主要集中在150～350℃之间,在化学成分上主要表现为铁亏型,同时发育硫亏型黄铁矿,Co、Ni含量分别为8%～11%和2%～8%,Co/Ni比值1.13～5.50,Au/Ag比值6.00～25.67。地质—地球化学特征表明:二道沟金矿床为一个受接触带构造控制的与燕山期构造—岩浆作用有关的岩浆期后热液矿床,构造与岩浆作用复合控矿特征明显。 |
| 英文摘要: |
| In order to ascertain the genesis ofErdaogou gold deposit, the typomorphic study of pyrite, the main ore-bearing mineral, was carried out. The results show that pyrite thermal conductivity type is P-type dominated N-P mixed type. The metallogenic temperature mainly concentrates in the range of 150-350 ℃. The main chemical composition of pyrite is iron deficiency type. At the same time, pyrite with sulfur deficiency type is developed. The content of Co and Ni are 8%-11% and 2%-8%, respectively. The ratio of Co/Ni is 1. 13-5. 50, Au/Ag ratio ranged from 6. 00 to 25. 67. Geological and geochemical characteristics show that Erdaogou gold deposit is a post-magmatic hydrothermal deposit controlled by contact zone structure and related to Yanshanian tectono-magmatism, and its ore-controlling characteristics are obvious. |
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