云南省寻甸县矿床的控矿因素及矿层产出规律

Ore controlling factors and occurrence law of ore bed in Xundian County, Yunnan Province

云南省寻甸县矿床在大地构造位置上处于扬子准地台(Ⅰ)滇东台褶带(Ⅰ_(3))昆明台褶束(Ⅰ^(1)_(3))嵩明台凹(Ⅰ^(1-1)_(3))东部,为普渡河大断裂与小江深断裂带所夹持带,属褶皱基底上的长期拗陷区。矿层产于寒武系下统渔户村组二段(∈_(1)y^(2))地层中,呈层状产出,属沉积型矿床。笔者于2021年-2022年参与矿区生产勘探工作,现从矿区成矿地质背景、矿床地质特征、矿层的分布规律、控矿因素等进行探讨。

XUNDIAN deposit in Yunnan Province is located in the east of Yangtze paraplatform( Ⅰ) East Yunnan platform fold belt( Ⅰ_(3)), Kunming platform fold bundle (Ⅰ^(1)_(3)) Songming platform depression (Ⅰ^(1-1)_(3)). It is a long-term depression area on the fold basement. The ore bed occurs in the second member (∈_(1)Y^(2)) of Yuhucun formation of Lower Cambrian system. It is a sedimentary deposit. The author participated in the production and exploration of the mining area from 2021 to 2022, and now discusses the metallogenic geological background, geological characteristics of the deposit,distribution law of ore bed, ore controlling factors, etc.