云南勐腊县龙巴河铜矿特征及找矿标志

THE FEATURE AND PROSPECTING CRITERIA OF LONGBAHE CU DEPOSIT IN MENGLA,YUNNAN

龙巴河铜区位于位于扬子准地台西缘兰坪-思茅中生代塌陷南部。矿体呈层状或似层状沿近东西向断层破碎带展布,矿体围岩为中侏罗系统小红桥组上段(J_2x^2),含矿岩性主要为泥质粉砂岩、石英细砂岩,矿体明显受断层构造及地层控制。其矿床成因类型为地下热水溶滤铜矿床,矿区深部及外围有较大找矿前景。

Longbahe Cu orefield is in the S part o f Lanping-ISimao Mesozoic depression o f W margin o f Yangzi paraplatform. The ore body is bedded or s tra to id, d is tr ibu te d along nearly EW fa u lt fracture zone. The w a l l rock of ore body is Middle Jurassic Xiaohongqiao Formation Upper Member （ J2X2 ）, the main ore-bearing rock is muddy siltstone, quartz f ine sandstone. The ore body is controlled c lear by fa u lt and strata. I t is a Cu deposit o f under-ground hot water solut ion- f i lter in genesis. There is good prospecting po tent ia l ity in the deep and surrounding area.