摘要
文章在简述从江县高增锰矿床地质特征的基础上,着重对菱锰矿床的形成机理进行了初步分析,认为锰质物源主要来自海底火山喷发、渗流热卤水和陆源。在深大断裂两旁、滨海、浅海海湾环境、温暖的古气候和藻类繁衍的成矿地质条件下,锰质主要经过藻类生物地球化学的作用,促进了菱锰矿在海水中的沉积。根据矿床地质特征,将成因类型划为浅海海湾相沉积型碳酸锰矿床,其成矿时代归属早震旦世大塘坡早期。
On the basis of introducing geological characteristics of the Congjiang Gaozeng manganese deposit, the paper mainly analyzed the formation mechanism of manganese deposit. It is thought that the manganese source mainly comes from the seafloor volcanic eruption, infiltrated hot brine and continental crust, and re - deposited the algae biogeochemical process in the sea water in the geo- logical conditions of 1 ） two sides of the deep large faults ; 2 ） littoral and shallow sea gulf environment ; 3 ） warm palaeo climate ; 4 ） and large amounts of algae microorganism. Based on the geological characteristics of the manganese deposit, the genesis of the deposit is classified into the carbonate manganese ore deposit which was formed in the shallow sea water environment, and its metallogenetic age is the early Datangpo epoch of Early Sinian System.
出处
《矿产勘查》
2013年第5期513-518,共6页
Mineral Exploration
关键词
菱锰矿
地质特征
锰质来源
成矿过程
贵州
高增
magnesite deposit
geological characteristics
manganese source
ore - forming process
Gaozeng
Guizhou
