矿业工程研究
礦業工程研究
광업공정연구
MINERAL ENGINEEERING RESEACH
2014年
2期
53-58
,共6页
银铜矿床%地球化学%矽卡岩型矿床%刁泉
銀銅礦床%地毬化學%矽卡巖型礦床%刁泉
은동광상%지구화학%석잡암형광상%조천
silver-copper deposit%geochemistry%skarn deposit%Diaoquan
刁泉银铜矿为矽卡岩型矿床，矿体赋存在矿区中酸性岩体（花岗斑岩、石英斑岩、黑云母石英二长岩）周边的环形矽卡岩带中．为明确中酸性岩体与矿的关系，对矿床开展了微量元素地球化学综合研究：中酸性岩体、矽卡岩及大理岩都具有稀土总量均值较低（分别为162．77，119．9，24．84 mg/kg），轻稀土富集（LREE/HREE 为5．95～27．9）和负铕异常（δEu＝0．16～0．93）的特征；同时中酸性岩体富集W，Ag，Cu，Mo，矽卡岩、大理岩矿化元素地球化学特征与中酸性岩体相似；中酸性岩体富集大离子亲石元素Rb，亏损大离子亲石元素Sr，矽卡岩微量元素地球化学特征与岩体相似．综合分析表明矿化受中酸性岩体岩浆作用的影响，岩体为成矿物质携带者，该矽卡岩型矿床与中酸性岩体关系密切．
刁泉銀銅礦為矽卡巖型礦床，礦體賦存在礦區中痠性巖體（花崗斑巖、石英斑巖、黑雲母石英二長巖）週邊的環形矽卡巖帶中．為明確中痠性巖體與礦的關繫，對礦床開展瞭微量元素地毬化學綜閤研究：中痠性巖體、矽卡巖及大理巖都具有稀土總量均值較低（分彆為162．77，119．9，24．84 mg/kg），輕稀土富集（LREE/HREE 為5．95～27．9）和負銪異常（δEu＝0．16～0．93）的特徵；同時中痠性巖體富集W，Ag，Cu，Mo，矽卡巖、大理巖礦化元素地毬化學特徵與中痠性巖體相似；中痠性巖體富集大離子親石元素Rb，虧損大離子親石元素Sr，矽卡巖微量元素地毬化學特徵與巖體相似．綜閤分析錶明礦化受中痠性巖體巖漿作用的影響，巖體為成礦物質攜帶者，該矽卡巖型礦床與中痠性巖體關繫密切．
조천은동광위석잡암형광상，광체부존재광구중산성암체（화강반암、석영반암、흑운모석영이장암）주변적배형석잡암대중．위명학중산성암체여광적관계，대광상개전료미량원소지구화학종합연구：중산성암체、석잡암급대리암도구유희토총량균치교저（분별위162．77，119．9，24．84 mg/kg），경희토부집（LREE/HREE 위5．95～27．9）화부유이상（δEu＝0．16～0．93）적특정；동시중산성암체부집W，Ag，Cu，Mo，석잡암、대리암광화원소지구화학특정여중산성암체상사；중산성암체부집대리자친석원소Rb，우손대리자친석원소Sr，석잡암미량원소지구화학특정여암체상사．종합분석표명광화수중산성암체암장작용적영향，암체위성광물질휴대자，해석잡암형광상여중산성암체관계밀절．
The Diaoquan silver-copper deposit is a skarn deposit.The ore body occurrence in the annular skarn zone that is around the neutral -acid rock mass (granite porphyry,quartz porphyry and biotite quartz monzonite).In this paper,the systematic study of trace element geochemical is carried out on this deposit,in order to determine the relationship between neutral-acid rock mass and ore.Neutral-acid rock mass,skarn and marble are resembled in the REE geochemical features,which is presented by low ΣREE,and they are enriched in LREE,and δEu is negative anomalies.Neutral -acid rock mass enrich W,Ag,Cu and Mo.The geochemical characteristics of mineralization elements in skarn and marble are similar to neutral -acid rock mass.Neutral-acid rock mass enriches lithophile element Rb,depleted in lithophile element Sr,which show that the rock mass has been contaminated by crust.The geochemical characteristics of trace elements in skarn and rock mass are similar.The comprehensive analysis suggests that the mineralization has been influenced by magmatism of neutral -acid rock mass,and rock mass is the metallogenic material carriers,and this skarn deposit is closely associated with Neutral-Acid rock mass.
