云南南华地区大龙潭金矿之发现及其矿床地质特征

简要报道了在云南省南华县发现的大龙潭金矿床的地质特征。大龙潭金矿主矿体长360m,斜深大于60m。矿体形态呈似层状,局部呈透镜状,形态变化中等。矿体厚度的变化系数为71.2%～149.6%,较稳定;Au品位变化系数为87.5%～218%,较均匀;矿体产于向斜两翼,被断层错动,构造影响程度中等。据以上矿床地质特征将该矿区确定为Ⅱ勘查类型。

Discovery of the Dalongtan gold deposit in the Nanhua area,Yunnan,China and its geological characteristics

The paper briefly reports the geological characteristics of the Dalongtan gold deposit discovered in Nanhua County, Yunnan Province. The main orebody of the deposit is 360 m long with a dip width of >60 m. The orebodies are bed-like in shape and locally lenticular, showing moderate variation in shape. The thickness of the orebodies is relatively uniform, with a variation coefficient of 71.2-149.6%. The gold grade is relatively homogeneous, and its coefficient of variation is 87.5-218%. The orebodies occur in both limbs of a syncline and are disrupted by faults, undergoing moderate structural influence. According to the above-mentioned geological characteristics, the gold district reported here is considered to be of exploration type II.