新疆北山坡一含铜镍镁铁-超镁铁质岩体铬铁矿特征研究

柴凤梅; 夏芳; 陈斌; 卢鸿飞

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新疆北山坡一含铜镍镁铁-超镁铁质岩体铬铁矿特征研究

研究精粹 | 更新时间：2026-01-21

- 新疆北山坡一含铜镍镁铁-超镁铁质岩体铬铁矿特征研究
- 新疆北山坡一含铜镍镁铁-超镁铁质岩体铬铁矿特征研究
- 新疆大学学报（自然科学版中英文） 2011年28卷第4期页码：389-394
- 作者机构：
  
  1. 新疆大学地质与勘查工程学院
  2. 北京大学地球与空间科学学院
  3. 新疆维吾尔自治区地质矿产勘查开发局第六地质大队
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(40863001、40973028、40972069);新疆维吾尔自治区自然科学基金项目(2010211A08);新疆大学“天山学者”特聘教授启动经费项目
- DOI：
  中图分类号： P618.31
- 纸质出版：2011
- 稿件说明：
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[1]柴凤梅,夏芳,陈斌,等.新疆北山坡一含铜镍镁铁-超镁铁质岩体铬铁矿特征研究[J].新疆大学学报(自然科学版),2011,28(04):389-394+505.

柴凤梅, 夏芳, 陈斌, et al. 新疆北山坡一含铜镍镁铁-超镁铁质岩体铬铁矿特征研究[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2011, 28(4): 389-394.
[1]柴凤梅,夏芳,陈斌,等.新疆北山坡一含铜镍镁铁-超镁铁质岩体铬铁矿特征研究[J].新疆大学学报(自然科学版),2011,28(04):389-394+505. DOI：

柴凤梅, 夏芳, 陈斌, et al. 新疆北山坡一含铜镍镁铁-超镁铁质岩体铬铁矿特征研究[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2011, 28(4): 389-394. DOI：

摘要

坡一镁铁-超镁铁质岩体为新疆北山地区一重要的含铜镍硫化物的侵入体.该岩体主要由橄榄岩、辉石岩和辉长岩组成.铬铁矿主要以副矿物形式现于橄榄岩中.它们以自形-半自形以及它形存在于橄榄石颗粒间或其内

部分为辉石包裹

偶见其包裹橄榄石.结合电子探针研究

认为坡一岩体母岩浆是来源于软流圈地幔或者与地幔柱有关的基性岩浆

原生岩浆经过了两个阶段的演化形成了目前的坡一岩体.包裹于橄榄石中的铬铁矿为岩浆早期深部岩浆房中结晶的产物

其他形式存在的铬铁矿为富含橄榄石和铬铁矿"晶粥"的演化岩浆结晶的结果.铬铁矿的结晶对坡一铜镍矿床的形成具有重要的意义.

Abstract

The Poyi mafic-ultramafic intrusion is one of the most important Cu-Ni bearing complexes in Beishan area.This intrusion is composed of peridotite

pyroxenite and gabbro.Chromites occurs in the peridotite as an enhedral

subhedral and anhedral accessory mineral.The characteristics of chromites suggested that the primary magma of the Poyi intrusions must have been mantle-derived S-undersaturated mafic magma derived from asthenosphere mantle source even related to mantle plume and have experienced two stages evolution to form this intrusion.Some chromites enclosed within olivine may be crystallized from the primary magma in the deep magma chamber

and others enclosed within pyroxene and being interstitial crystals may be formed from the olivine-and sulfide-laden crystal mush in the high-level magma chamber.The chromites formed in the early stage of magma evolution are very important for the Cu-Ni sulphide deposit.

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