陆川县铁沙岗铁矿区地质特征及找矿方向探讨  

Geological characteristics and prospecting direction of Tieshagang iron mining area in Luchuan of Guangxi

作　　者：梁徐文 梁国科 刘家试 伍磊 杨小龙 林冰霞 梁朝用 陈昱均 

机构地区：[1]广西壮族自治区二七二地质队地质勘查院,广西南宁5300312 [2]广西壮族自治区地质调查院,广西南宁530023

出　　处：《矿产与地质》2015年第2期158-162,共5页Mineral Resources and Geology

摘　　要：铁沙岗铁矿床位于沙坡―安宁―上冲铁矿带的北段,磁铁矿体均主要产于云开群兰坑岩组(Pt2-3l)与加里东期中细粒黑云母花岗岩体(γ3)接触带上的矽卡岩内。主要构造为NE―SW向展布的陆川复式背斜,断裂总体控制该矿区矿体呈NE向展布,并提供了有利的储矿场所。矿石矿物以磁铁矿为主,次为方铅矿、闪锌矿、赤铁矿,少量磁黄铁矿、菱铁矿。围岩蚀变主要有矽卡岩化、硅化、黄铁矿化等,矽卡岩化、硅化带为该区最重要的找矿标志。Tieshagang iron depositis located in the northern section of Shapo-Anning-Shangchong iron ore met-allogenic belt.The magnetic orebodies mainly occur in a set of skarn in the contact zone of Lankeng rock for-mation of Yunkai Group （Pt2-3 l）and Caledonian medium-fine grained biotite granite mass （γ3 ）.The main structure is Luchuan composite anticline which is distributed along NE to SW and the ore bodies in the min-ing area is generally controlled by fault which provides favorable impounding place.The ore occurs mainly as magnetite,with lesser galena,sphalerite,hematite,and minor pyrrhotite and siderite.The main wall rock alteration includes skarnization,silicification,and pyritization.In this area,the most important clues for prospecting are the skarnization and silicification belts.

关 键 词：磁铁矿 地质特征 找矿方向 铁沙岗 广西 

分 类 号：P618.31[天文地球—矿床学]