| 白学让.许昌铁矿绿钠闪石及其标型意义[J].地质找矿论丛,1987,(1):67-73 |
| 许昌铁矿绿钠闪石及其标型意义 |
| THE TYPOMORPHIC PECULIARITIES OF HASTINGSITE FROM XUCHANG IRON ORE FIELD, HENAN PROVINCE |
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| DOI：10.6053/j.issn.1001-1412.1987.1. 007 |
| 中文关键词: 许昌铁矿 绿钠闪石 标型 |
| 英文关键词: |
| 基金项目:中国科学院科学基金 |
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| 中文摘要: |
| 本文对河南许昌铁矿区的绿钠闪石的地质产状、物理性质、化学成分和成因等方面进行研究,并与我国鞍本、五台、舞阳等铁矿区的绿钠闪石进行对比,提出绿钠闪石主赋存于地台边缘的太古代绿岩带的一套海相中基性火-沉积-变质含铁岩系中,与鞍山式铁矿切伴生.因此,绿钠闪石可作为寻找前寒武纪沉积变质型磁铁矿床的-种标型矿物. |
| 英文摘要: |
| In this paper, the geological occurrence and the physical features, X-ray diffraction characteristics, chemical compositions and the origin of hastingsite in the Xucbang iron ore field are discussed, and also compared with the hastingsite from Anben, Wutai and Wuyang iron ore fields in China. The results reveal that the hastingsites from the Precambrian meta-sedimen-tary iron fields in China all possess the same characteristics: they are all formed in the lower-medium metamorphism of oceanic basic volcanic-sedimen-tary rock sequence, distributed in Archean greenstone belts which developed along the platform margin. Therefore, as a typomorphic mineral, hastingsite is a key to look for the Precambrian recta-sedimentary iron ores. |
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