Metallogenic Geological Characteristics and Genesis of the Graphite Ore Belt in East Junggar, Xinjiang
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摘要: 东准地区石墨找矿取得重大突破，石墨矿带规模大，层位稳定，品位富，厚度大。通过对其成矿地质背景和典型矿床成矿地质特征研究及控矿地质条件的分析，认为准噶尔地区区域构造的反复拉张、闭合，为富含有机质的含碳（煤）地层沉积创造了条件；东准地区造山期形成的北西西向深大断裂及巨型的韧性剪切带，使得早先富集的碳在有利的成矿空间与环境中得到再次集中与富集；至古生代，岩浆岩的侵入为矿床提供了巨量的热源与动能，在成矿有利地段使碳得到最终富集、净化与重结晶，从而形成石墨矿。Abstract: A major prospecting breakthrough for high quality graphite ore was made in East Junggar of Xinjiang. The graphite ore belt is large scale and has stable horizon, with large thickness and rich grade. In this paper, the mineralization geological background, the geological characteristics and ore-controlling geological conditions of typical graphite deposits have been studied. The results show that the crustal repeatedly extension and closure of the East Junggar had provided the conditions for forming the rich carbon-bearing formation. Then, there were series nappe movements in the orogenic phase and formed north-west-west deep faults and massive ductile shear zones, re-concentrated and enriched the carbon in favorable ore-forming space and environment; In the Paleozoic period, the magmatic rocks intrusion provided huge amount of heat and kinetic energy, which caused the carbon enriched, purified and recrystallized to became the graphite mine finally.
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Keywords:
- graphite /
- metallogenic geological characteristics /
- genesis /
- East Junggar /
- Xinjiang
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