地质找矿论丛
地質找礦論叢
지질조광론총
CONTRIBUTIONS TO GEOLOGY AND MINERAL RESOURCES RESERCH
2001年
1期
62-66
,共5页
硫铁矿%控矿因素%找矿方向%莺子山地区%宁芜
硫鐵礦%控礦因素%找礦方嚮%鶯子山地區%寧蕪
류철광%공광인소%조광방향%앵자산지구%저무
莺子山地区与著名的向山硫铁矿有着相似的成矿条件,成矿作用主要集中在大王山旋回中,硫铁矿体的形成和分布受穹窿构造、NE向断裂、辉石闪长玢岩体等控制。具有褐铁矿化-黄铁矿化-绢云母化-高岭土化蚀变组合;重力异常显著,激电极化率ηS一般>15%,并伴有低电阻率异常;具有S异常,并伴有P,Mo元素组合异常等,是莺子山地区硫铁矿的找矿标志。地质、地球物理、地球化学、遥感特征表明和尚岘、龙庵凹一带为找矿一级远景地段,竹园山、老坟山等地为找矿二级远景地段。
鶯子山地區與著名的嚮山硫鐵礦有著相似的成礦條件,成礦作用主要集中在大王山鏇迴中,硫鐵礦體的形成和分佈受穹窿構造、NE嚮斷裂、輝石閃長玢巖體等控製。具有褐鐵礦化-黃鐵礦化-絹雲母化-高嶺土化蝕變組閤;重力異常顯著,激電極化率ηS一般>15%,併伴有低電阻率異常;具有S異常,併伴有P,Mo元素組閤異常等,是鶯子山地區硫鐵礦的找礦標誌。地質、地毬物理、地毬化學、遙感特徵錶明和尚峴、龍菴凹一帶為找礦一級遠景地段,竹園山、老墳山等地為找礦二級遠景地段。
앵자산지구여저명적향산류철광유착상사적성광조건,성광작용주요집중재대왕산선회중,류철광체적형성화분포수궁륭구조、NE향단렬、휘석섬장분암체등공제。구유갈철광화-황철광화-견운모화-고령토화식변조합;중력이상현저,격전겁화솔ηS일반>15%,병반유저전조솔이상;구유S이상,병반유P,Mo원소조합이상등,시앵자산지구류철광적조광표지。지질、지구물리、지구화학、요감특정표명화상현、룡암요일대위조광일급원경지단,죽완산、로분산등지위조광이급원경지단。
Yingzishan district is similar to Xiangshan district which iswell known for sulfur iron ore in ore-forming conditions.Ore-forming process is mainly confined in Dawangshan cycle.Ore body is controlled by dome,NNE faults,or pyroxene porphyrite intrussive.Limonitization-pyritization-sericitization-kaolinitization is the alteration assemblage.Anomlies are evident,such as gravity,η>15%,low resistance,S,P,Mo element association in Yingzishan area is the guide to sulfur iron ore.Features of geology,geophysics,geochemitry and remote sensing data indicate that Heshangxian-Longanao is the first class prospect,Zhuyuanshan and Laofenshan are the second class prospects.