安徽凤阳山区石英岩矿成矿规律分析
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摘要
凤阳山区石英岩矿床成因类型主要有沉积变质型和沉积型两种,均属层控性矿床。其中沉积变质型石英岩矿是本区主要类型矿床,赋存构造体系为老青山单斜,控矿层位为凤阳群白云山组地层,矿石类型主要为石英岩,其次是石英砂岩、含白云母石英岩等;沉积型石英岩矿赋存构造体系为雷家户-宋集单斜,控矿层位为八公山群伍山组,矿石类型主要为石英砂岩。区内发育的褶皱构造为石英岩矿体提供了广阔的赋存空间,而断裂构造的发育却对矿体分布的连续性造成了不同程度的破坏,对石英岩矿石质量也有一定的影响。
There are two genetic types of quartzite, sedimentary metamorphic and sedimentary, occurring in the Fengyang Mountain area, both are strata-bound, of which sedimentary metamorphic quartzite deposit dominates in the area and is structural ly hosted in the Laoqingshan monocl ine and strat igraphical ly in the Baiyunshan Formation of the Fengyang Group, with the major ore type being quartzite, then quartz sandstone, mica-bearing quartzite, etc. Sedimentary quartzite structurally occurs in the Leijiahu-Songji monocline of the Wushan Formtion of the Bagongshan Group, with quartz sandstone being dominant. Folding structure developed in the area provides a broad space for the quartzite ore body to occur in, and the development of fracture structures does damages to the continuity of the ore body to different degrees, and then deteriorates the quartzite ore quality.
There are two genetic types of quartzite, sedimentary metamorphic and sedimentary, occurring in the Fengyang Mountain area, both are strata-bound, of which sedimentary metamorphic quartzite deposit dominates in the area and is structural ly hosted in the Laoqingshan monocl ine and strat igraphical ly in the Baiyunshan Formation of the Fengyang Group, with the major ore type being quartzite, then quartz sandstone, mica-bearing quartzite, etc. Sedimentary quartzite structurally occurs in the Leijiahu-Songji monocline of the Wushan Formtion of the Bagongshan Group, with quartz sandstone being dominant. Folding structure developed in the area provides a broad space for the quartzite ore body to occur in, and the development of fracture structures does damages to the continuity of the ore body to different degrees, and then deteriorates the quartzite ore quality.
引文
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[4]殷张明,胡殿坤,樊庭瑞,胡甦,等.安徽省凤阳地区石英岩矿资源调查评价报告[R].2011.