豫西合峪萤石矿矿集区矿床特征及找矿前景

合峪萤石矿矿集区是河南省萤石矿田相对最集中的地段。近年来，多个地勘单位对周边十多个萤石矿权在进行勘查，共提交CaF2矿物量1000万吨以上。本文从该区萤石矿的成矿地质背景、赋矿岩性特征、成矿构造特征分析入手，详细论述不同方向的构造对萤石矿体的控矿作用。研究认为NW向断裂为区域的主要控矿构造及容矿构造，占区域萤石矿资源量的80%，其次是NE向断裂在马丢矿区形成了规模巨大的萤石矿床，并对萤石矿体沿走向、倾向的赋存特征、矿石质量特征进行论述，指出断裂构造破碎带和合峪花岗岩基的出露区及其内外断裂构造破碎带中硅化、绢英岩化和玉髓化等蚀变特征是找矿的直接标志。通过对比鱼池岭钼矿床的矿床特征，初步总结了萤石矿成矿地质背景，为在该区开展萤石矿找矿指明靶区和方向。

Deposit characteristics and prospecting potential of the Heyu fluorite ore concentration area in western Henan Province

The Heyu fluorite ore concentration area is the most concentrated part of the fluorite ore field in Henan Province. In recent years, a number of geological prospecting units have carried out prospecting for more than ten mining rights around them, and submitted a total of more than 10 million tons of CAF2 minerals. Based on the analysis of the ore-forming geological background, ore-bearing lithological characteristics and ore-forming structural characteristics of the fluorite ores in this area, this work discussed in detail the ore-control effect of structures in different directions on the fluorite ore bodies. It is believed that NW-trending faults are the main ore-controlling and ore-hosting structures in the region, accounting for 80% of the regional fluorite resources. Secondly, the NE-trending fault formed a huge fluorite deposit in the Madiu mining area. The occurrence characteristics and ore quality characteristics of fluorite ore bodies along the strike and dip were studied. The exposure areas of the fault structural fracture zone and Heyu granite batholith, as well as the alteration of silicification, sericitization and chalcedony in the internal and external fault structural fracture zones, are the direct indicators of ore prospecting. By comparing the characteristics of the Yuchiling molybdenum deposit, the metallogenic geological background of the fluorite deposit were preliminarily summarized, indicating the target area and direction for fluorite prospecting in this area.