矿产与地质
礦產與地質
광산여지질
MINERAL RESOURCES AND GEOLOGY
2015年
4期
411-419
,共9页
薛海涛%权知心%李大卓%张蓓%丁冰%付治国
薛海濤%權知心%李大卓%張蓓%丁冰%付治國
설해도%권지심%리대탁%장배%정빙%부치국
钼矿床%太古界集宁群%赋矿围岩%成矿热液蚀变%矿物共生组合
鉬礦床%太古界集寧群%賦礦圍巖%成礦熱液蝕變%礦物共生組閤
목광상%태고계집저군%부광위암%성광열액식변%광물공생조합
molybdenum deposit%Archaeozoic Jining Group%ore-bearing wall-rock%ore-forming hydrother-mal alteration%mineral association
曹四夭超大型斑岩型钼矿床,其成矿热液蚀变总体上表现为面状特征;蚀变主要以各种脉体出现。主要有硅化、钾长石化、萤石化和方解石化,尤以硅化与矿化关系最为密切。硅化从早期到晚期均可见到,石英脉发育在各种岩石中,是钼的主要载体;钾长石化有钾长石脉及复式脉,矿化微弱;金属矿物组合有辉钼矿-黄铁矿组合,金属矿物与脉石组合主要有辉钼矿-石英(脉)组合,黑钨矿-石英(脉)组合。因此充分反映出斑岩型钼矿床高温成矿热液蚀变特征。
曹四夭超大型斑巖型鉬礦床,其成礦熱液蝕變總體上錶現為麵狀特徵;蝕變主要以各種脈體齣現。主要有硅化、鉀長石化、螢石化和方解石化,尤以硅化與礦化關繫最為密切。硅化從早期到晚期均可見到,石英脈髮育在各種巖石中,是鉬的主要載體;鉀長石化有鉀長石脈及複式脈,礦化微弱;金屬礦物組閤有輝鉬礦-黃鐵礦組閤,金屬礦物與脈石組閤主要有輝鉬礦-石英(脈)組閤,黑鎢礦-石英(脈)組閤。因此充分反映齣斑巖型鉬礦床高溫成礦熱液蝕變特徵。
조사요초대형반암형목광상,기성광열액식변총체상표현위면상특정;식변주요이각충맥체출현。주요유규화、갑장석화、형석화화방해석화,우이규화여광화관계최위밀절。규화종조기도만기균가견도,석영맥발육재각충암석중,시목적주요재체;갑장석화유갑장석맥급복식맥,광화미약;금속광물조합유휘목광-황철광조합,금속광물여맥석조합주요유휘목광-석영(맥)조합,흑오광-석영(맥)조합。인차충분반영출반암형목광상고온성광열액식변특정。
The overall characteristic of ore-forming hydrothermal alteration in Caosiyao super-large Mo deposit is planar and the alteration occurs in the form of various veins.It consists of silicification,potash feldspa-thization,fluoritization and calcilization,while mineralization is closely related to silicification.Silicification is found through early period to late period of mineralization process,while quartz occurred in various rocks and acted as the primary carrier of molybdenum.Potash feldspathization results in potash feldspar veins and complex veins which have rather weak mineralization.The association of metal minerals include molybdenite-pyrite assemblage,and the association of metal minerals and gauge minerals include molybdenite-quartz (vein)assemblage and wolframite-quartz (vein)assemblage.The characteristics of the high temperature ore-forming hydrothermal alteration in the porphyry molybdenum deposit are fully revealed.