陕南天台山磷锰矿地质特征及成因分析  

Geological Characteristics and Genesis Analysis of Phosphorus-manganese ore in Tiantai Mountain,Southern Shanxi

作　　者：钱赵伟 李金旺 李树雷 QIAN Zhaowei;LI Jinwang;LI Shulei(CMGB BU-1 Research Institute of Urban Safety and Underground Space Co., Ltd., Beijing 101100, China;Xianyang Northwest Nonferrous Team 712 Corps Co., Ltd., Xianyang, Shanxi 712000, China)

机构地区：[1]中冶一局城市安全与地下空间研究院有限公司,北京101100 [2]咸阳西北有色七一二总队有限公司,陕西咸阳712000

出　　处：《中国锰业》2022年第1期27-31,36,共6页China Manganese Industry

摘　　要：对陕南天台山磷质岩系锰矿地质特征系统性论述,剖析了含矿岩性特征及成矿的连续性。通过岩石地球化学分析,天台山磷锰矿富SiO_(2)、CaO、P_(2)O_(5),其中w(SiO_(2))为12.29%~29.0%,w(CaO)为17.64%~26.31%,w(P_(2)O_(5))为0.16%~26.75%,SiO_(2)来源可能与Si饱和溶液的低温上升洋流有关,w(V)/w(Cr)为1.53~4.68,反映了磷、锰元素在不同的氧化—还原沉积环境中发生分离而单独沉积,w(Sr)/w(Ba)为0.75~2.68,为热水沉积环境。通过矿床成因及赋存条件研究,为后期找矿预测提供依据。The geological characteristics of manganese ore in Tiantai Mountain phosphorous rock series are systematically discussed,and the ore-bearing lithologic characteristics and the continuity of mineralization are also analyzed.The petrogeochemical analysis shows that the Tiantaishan phospho-manganese ore is rich in SiO_(2)(12.29%~29.0%),CaO(17.64%~26.31%)and P_(2)O_(5)(0.16%~26.75%).The source of SiO_(2)may be related to the low temperature rising ocean current of Si saturated solution.The w(V)/w(Cr)ratio varies from 1.53 to 4.68.It reflects that phosphorus and manganese were separated and deposited separately in different oxidation-reduction sedimentary environments.We know that w(Sr)/w(Ba)ratios should variy from 0.75 to 2.68,indicating hydrothermal sedimentary environments.In the study of genesis and occurrence conditions of the deposit,it provides the basis for the later prospecting prediction.

关 键 词：磷质岩系锰矿 矿床地质特征 矿床成因 天台山磷锰矿 

分 类 号：P618.32[天文地球—矿床学]