山东省兰陵县草主山矿区铁矿床地质特征和找矿远景分析

Analysis on Geological Characteristics and Prospecting Potential of Iron Deposits in Caozhushan Mining Area in Lanling County of Shandong Province

摘要:

兰陵县草主山矿区属苍峄铁矿带一部分，区内赋存有全隐伏的“鞍山式”铁矿床，经勘查共圈定了南北2个主矿带，5个矿体。矿体赋存于泰山岩群山草峪组中，其形态受基底褶皱控制，具有平行延伸的特点，经过以往地质勘查工作，基本查明了800m以浅矿体的产出位置、形态、产状、规模、分布、厚度、矿石质量等。矿体沿走向倾向尚未封闭，有继续延伸的趋势，并且矿石品位和矿体厚度未有减弱趋势，由此可得结论其800m以深仍有很大的找矿前景，满足深部找矿的要求，总结其成矿规律、找矿标志，建立找矿模式，可为进一步勘查提供可靠的地质参考依据。

Abstract:

Caozhushan mining area is a part of Cangyi iron ore belt. Hidden Anshan type iron deposit occurs in this area. Through explorations, two main ore belts in north and south and five ore bodies have been circled. Ore bodies occur in Shancaoyu formation of Taishan group. Its forms are controlled by folds in the base with the characteristics of extending parallelly. After previous geological exploration, the position, shape, scale, occurrence, distribution, thickness, ore quality of ore bodies in the depth of -800m have been identified. Ore bodies have not closed along the trend and tendency. It has the trend of extending continuously, and ore grades and thickness do not have the trend of cutting. It is concluded that there is a big prospecting prospect in the depth of -800m. Through summarizing metallogenic regularity and prospecting criteria, prospecting model has been established. It will provide reliable geological references for further exploaration in this area.