中祁连湖滩地区菜子沟一带锰矿成矿条件分析
Analysis of metallogenic conditions of manganese ore in Caizigou of Lake Beach Area,Central Qilian Mountain
孙平原 1赵振琯1
作者信息
- 1. 甘肃省地质矿产勘查开发局第二地质矿产勘查院,甘肃 兰州 730020
- 折叠
摘要
菜子沟位处中祁连东段拉脊山—雾宿山褶皱带内,其中奥陶系雾宿山群是变质热液型铜、铁、铅、锰矿床的有利含矿层,铜矿赋存于该层安山岩中,锰矿主要赋存于该层硅质岩中.在该区域共发现的 11 个锰矿体分布于下圈、大台子脑、年家湾、张家沟、陈家沟等地,主要赋存于中上奥陶统雾宿山群的中—基性火山岩与正常沉积岩互层中,岩性为硅质(板)岩,次为安山岩,呈近东西向带状展布.矿床成因属火山喷发—沉积变质型,含矿地层、矿化蚀变信息可作为直接找矿标志.
Abstract
Caizigou Area is located in the Lajishan-Wusushan fold belt in the Eastern of Central Qilian.The Ordovician Wusushan Group is a favorable ore-bearing layer of metamorphic hydrothermal copper,iron,lead and manganese deposits,mainly copper deposits in andesite and manganese deposits in siliceous rocks.A total of 11 manganese ore bodies have been found in this area,distributed in Xiaquan,Dataizinao,Nianjiawan,Zhangjiagou,Chenjiagou and etc.These manganese ore bodies mainly exist in the interlayer between the meso-basic volcanic rocks and normal sedimentary rocks of the Middle and Upper Ordovician Wusushan Group.The lithology is siliceous(slate-rock),and the secondary is andesite.The genesis of the deposit belongs to the type of volcanic eruption-sedimentary metamorphism.Ore-bearing strata and mineralized alteration information can be used as direct prospecting criteria.
关键词
中祁连/雾宿山群/菜子沟/成矿条件Key words
Central Qilian Mountain/the Wusushan Group/Caizigou Area/metallogenic condition引用本文复制引用
出版年
2024
NETL
NSTL
万方数据