河南内乡板厂铜多金属矿矽卡岩矿体地质特征及找矿方向

GEOLOGICAL CHARACTERISTICS AND PROSPECTING DIRECTION OF SKARN ORE BODY IN BANCHANG COPPER POLYMETALLIC DEPOSIT OF HENAN

板厂铜多金属矿区位于朱阳关-夏馆断裂成矿带内,区内出露地层主要为秦岭群大理岩类。矿体地表呈带状分布;在中浅部倾向上矿体呈层状、似层状、叠瓦状重复出现,走向上波状弯曲[2];深部矿体倾向上呈带状、厚层状分布,走向上波状起伏。上部为脉状铜、铅锌、银矿体为主,向深部以矽卡岩型铜钼矿体为主。矿体垂向分带明显,由浅部中低温向中高温,高温渐变成矿特征。依据近年来的勘查资料,对钻孔中矽卡岩带的原生晕分布规律进行统计,结合各矿体的空间分布特征及矽卡岩矿体地质特征,总结成矿规律,提出下一步找矿方向。

Banchang copper polymetallic mining area is located in Zhuyangguan-Xiaguan fault metallogenic belt,and the exposed strata in the area is mainly marble rocks of Qinling group.The surface of the ore body is distributed in belt shape;in the middle and shallow parts,the ore body is layered,layer-like,imbricate repeatedly,and the trend is undulatory;in the deep ore body,it is distributed in bands,thick layers,and Ripples.The upper part is dominated by vein copper,lead-zinc,and silver orebodies,and the deeper part is dominated by skarn-type copper-molybdenum orebodies.The vertical zoning of the ore body is obvious,from shallow middle and low temperature to medium high temperature,with high temperature gradual mineralization characteristics.Based on recent survey data,the distribution of the original halo of the skarn belt in the borehole was statistically combined.The spatial distribution of each ore body and the geological characteristics of the skarn ore body were summarized.