黔东北地区氧化锰矿的成因类型及找矿方向  

Genesis Types of Oxide Manganese Deposits in East-northern Guizhou and Its Prospecting Direction

作　　者：何明华[1] 

机构地区：[1]贵州省地矿局103地质队,贵州铜仁554300

出　　处：《贵州地质》2001年第3期168-173,共6页Guizhou Geology

摘　　要：黔东北地区的氧化锰矿床系风化矿床 ,按其成因可进一步分为残积矿床和淋积矿床两种。前者在区域上分布相对较广 ,是由原生菱锰矿床经次生风化而成 ,呈带状延伸 ;后者是由锰质对原矿层附近围岩淋滤加积而成。本文探讨了不同类型矿床的特征和分布规律 ;同时还对该区氧化锰矿的成矿机理。Oxide manganese deposits in east-northern Guizhou are of exotic weathering deposits, further may be subdivided into two kinds of the eluvial ore deposit and the leaching-accretion deposit by genesis. The former, distributed in broad area comparatively, is originated from the primary rhodochrosite of sub-weathering, and occurs as banded extension; the latter resulted from manganese materials effect the wall-rock near the primer ore layers with leaching-accretion action. The characteristic and distribution rules of various deposits are deliberated; in addition the analysis on ore-forming mechanisms, factors of mineralizing control, and regional prospecting orientation is carried out.

关 键 词：氧化锰矿床 成因类型 找矿方向 风化矿床 残积矿床 成矿机理 淋积矿床 

分 类 号：P618.32[天文地球—矿床学]