山东省东阿县单庄铁矿床地质特征及找矿前景

Geological Characteristics and Prospecting Potential of Shanzhuang Iron Deposit in Dong’e County in Shandong Province

摘要:

近年，山东东阿单庄地区铁矿找矿取得重大突破，探求铁矿石资源量约3.5亿t。山东东阿单庄铁矿为汶上东平铁矿带的北延部分，矿区可分为柳林屯和前翟坊2个矿段，矿体赋存于泰山岩群山草峪组地层中，呈NW向带状展布，累计发现大小磁铁矿体27个，包括主要矿体7个，倾向SW，倾角53°～67°，矿体一般向深部有变陡、变富、变厚的趋势，矿体平均真厚度8.49m，TFe平均品位28.38%，mFe平均品位23.21%。通过对单庄地区铁矿地质特征、地球物理特征等综合研究，大致查明了单庄铁矿床矿体的形态、产状、规模、分布、厚度、矿石特征等。根据矿床成因类型，结合铁矿床的具体特点，认为该区铁矿找矿标志有地层、地球物理、矿体的赋存特征等3个主要标志，矿区的深部和外围成矿潜力巨大。

Abstract:

In recent years, great progress has been made in iron ore exploration in Shanzhuang area in Dong’e county in Shandong province. The amount of iron ore resources is about 3.5 billon tons. Shanzhuang iron deposit is the north extension part of Dongping iron deposit belt. The mine can be divided into Liulintun ore section and Qianzhaifang ore section. Ore bodies occurrs in Shancaoyu formation of Taishan group, and distributed in belt type with the trend of NW. 27 magnetite ore bodies have been found, and 7 are main ore bodies with the trend of SW, and the dip angle is 53°~67°. Ore bodies has the trend of becoming steep, rich and thick to the deep part. Avergae true thickness is 8.49m, average degree of TFe is 28.38%, and average degree of mFe is 23.21%. Through comprehensive research of geological characteristics and geophysical characteristics of iron deposit in Shanzhuang area, the shape, occurrence, scale, distribution, thickness and mineral characteristics of Shanzhuang iron deposit have been identified. According to types of the deposits, combining with the characteristics of iron deposit, it is regarded that strata, geophysics and occurrence of ore bodies are three main prospecting indicators. There is a large metallogenic potential in the deep and peripheral areas in this area.