阿尔泰—北准噶尔地区铁矿成矿特征及找矿前景

程建新; 彭素霞; 黑欢; 李文明; 肖朝阳

阿尔泰—北准噶尔地区铁矿成矿特征及找矿前景

中国地质调查局西安地质调查中心, 陕西西安 710054

基金项目: 中国地质调查局“阿尔泰—准噶尔北缘成矿带矿产资源调查”(12120113041900)

收稿日期: 2015-03-31

修回日期: 2015-05-13

刊出日期: 2015-09-15

Metallogenic Characteristics and Prospecting of the Iron Mine in Altay and North Junggar Area

Xi'an Center of China Geological Survey, Xi'an 710054, Shaanxi, China

Received Date: 31 March 2015

Revised Date: 13 May 2015

Publish Date: 15 September 2015

摘要

摘要: 笔者依据主要铁矿化分布区赋矿建造、蚀变及附近主要地质体、成矿作用、成矿地质条件、区域矿产、区域地球化学异常及航磁异常、空间组合等要素综合分析, 结合区域近30年来铁矿找矿实践和效果统计等将阿尔泰—准噶尔北缘地区铁矿划分为岩浆型、热液型、矽卡岩(交代改造)型、海相火山喷发-沉积(改造)型、海相火山喷气-热液(交代改造)型、陆相沉积型、海相沉积型(古砂矿)、残积型(现代砂矿)7种类型, 并总结了主要类型的区域找矿标志。认为区域铁矿找矿工作需按照深化老区、开拓新区的部署思路, 主攻海相火山喷发-沉积(改造)型及火山喷气-热液(交代改造)型磁铁矿。重点关注南阿尔泰阿巴宫及麦兹地区老矿区及南阿尔泰和准噶尔东北缘工作程度低的基岩区及浅覆盖区的部分航磁异常区。
- 阿尔泰—北准噶尔 /
- 铁矿类型 /
- 找矿标志 /
- 找矿方向
Abstract: According to the prospecting practice and statistics of iron mineralized area in Altay and north Junggar area, and based upon the comprehensive study on iron formation, alteration, main geological bodies, mineralization, ore forming geological conditions, regional minerals, geochemical anomalies and aeromagnetic anomalies, space combination, the iron ores in this area were divided into 7 types, which are magmatic type, hydrothermal type, skarn (metasomatism modified) type, marine volcanic eruption and deposition (modified) type, marine fumaroles and hydrothermal (metasomatism modified) type, continental sedimentary type, marine sedimentary type (ancient placer deposit), residual type (modern placer deposit). Prospecting signs for major types of iron ores in region exploration were also summed up. The deployment idea is to deepen old district and develop new searching areas, the marine volcanic eruption and deposition(modified) as well as marine fumaroles and hydrothermal (metasomatism modified) magnetite type iron ores were main direction for exploration. Major attention should be paid to the southern Altay Abagong and Maize old mining orefield, bedrock area of low working degree and some aeromagnetic anomaly zones of shallow cover area in southern Altay region and northeastern margin of the Junggar.
- Altay and north Junggar /
- iron ore types /
- prospecting signs /
- prospecting direction

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