物探与化探
物探與化探
물탐여화탐
GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2014年
3期
434-440
,共7页
刘光永%戴茂昌%祁进平%张锦章
劉光永%戴茂昌%祁進平%張錦章
류광영%대무창%기진평%장금장
紫金山铜金矿床%原生晕结构%深部找矿前景%高硫型矿床%斑岩型矿床
紫金山銅金礦床%原生暈結構%深部找礦前景%高硫型礦床%斑巖型礦床
자금산동금광상%원생훈결구%심부조광전경%고류형광상%반암형광상
Zijinshan copper-gold deposit%structural characteristics of primary haloes%ore-search prospect%high sulfidation deposit%porphyry deposit
通过系统采集紫金山铜金矿床4~11线共41个钻孔的岩矿样,绘制原生晕剖面图,建立垂向元素分带序列、矿体剥蚀程度准则,结合深部指示元素的特征,进行隐伏矿预测。该矿床金矿近矿晕为Au-Ag-Zn1,尾部晕为Bi-Ga-Mo-Sn-Ti-Co-Ni-W1-V;铜矿前缘晕为Hg-Sb-As,近矿晕为Cu-Pb1-Zn2,尾部晕为Be-W2。矿体剥蚀程度评价表明,高硫型铜矿体往深部已尖灭。深部F-Mn-Pb2-Zn3的异常形态和元素组合符合典型斑岩矿床的外带特征,斑岩体延伸至矿床周边;深部的蚀变矿物组合、金属矿物组合、流体包裹体特征等均表明深部可能存在斑岩铜(钼)矿床。
通過繫統採集紫金山銅金礦床4~11線共41箇鑽孔的巖礦樣,繪製原生暈剖麵圖,建立垂嚮元素分帶序列、礦體剝蝕程度準則,結閤深部指示元素的特徵,進行隱伏礦預測。該礦床金礦近礦暈為Au-Ag-Zn1,尾部暈為Bi-Ga-Mo-Sn-Ti-Co-Ni-W1-V;銅礦前緣暈為Hg-Sb-As,近礦暈為Cu-Pb1-Zn2,尾部暈為Be-W2。礦體剝蝕程度評價錶明,高硫型銅礦體往深部已尖滅。深部F-Mn-Pb2-Zn3的異常形態和元素組閤符閤典型斑巖礦床的外帶特徵,斑巖體延伸至礦床週邊;深部的蝕變礦物組閤、金屬礦物組閤、流體包裹體特徵等均錶明深部可能存在斑巖銅(鉬)礦床。
통과계통채집자금산동금광상4~11선공41개찬공적암광양,회제원생훈부면도,건립수향원소분대서렬、광체박식정도준칙,결합심부지시원소적특정,진행은복광예측。해광상금광근광훈위Au-Ag-Zn1,미부훈위Bi-Ga-Mo-Sn-Ti-Co-Ni-W1-V;동광전연훈위Hg-Sb-As,근광훈위Cu-Pb1-Zn2,미부훈위Be-W2。광체박식정도평개표명,고류형동광체왕심부이첨멸。심부F-Mn-Pb2-Zn3적이상형태화원소조합부합전형반암광상적외대특정,반암체연신지광상주변;심부적식변광물조합、금속광물조합、류체포과체특정등균표명심부가능존재반암동(목)광상。
Based on systematic collection of rock and ore samples from 41 drill holes along No. 4 and No.11 exploration lines in the Zi-jinshan copper-gold deposit of Fujian Province,the authors drew a contour map of primary halos,established vertical element zoning se-quence and orebody denudation guidelines and, in combination with characteristics of the indicator elements in the depth,made a pre-diction of concealed orebodies. For gold orebody, the near-halo is Au-Ag-Zn1 , and the rear halo is Bi-Ga-Mo-Sn-Ti-Co-Ni-W1-V, whereas for copper orebody, the front halo is Hg-Sb-As, the near halo is Cu-Pb1-Zn2 , and the rear halo is Be-W2. The evaluation of the denudation of the orebody shows that the high-sulfur copper orebody pinches out to the depth. The abnormal morphology and ele-mental composition of F-Mn-Pb2-Zn3 in the depth is consistent with the characteristics of a typical porphyry deposit, the porphyry body extends to the periphery of the deposit, and the deep alteration mineral assemblages, metal mineral assemblages, fluid inclusion char-acteristics show that there may exist a porphyry Cu ( Mo) deposit in the depth of the southwest part.