地质学报
地質學報
지질학보
ACTA GEOLOGICA SINICA
2014年
8期
1485-1493
,共9页
赵玉锁%杨立强%卿敏%闫家盼%郭晓东%朝银银%邱昆峰%王景瑞
趙玉鎖%楊立彊%卿敏%閆傢盼%郭曉東%朝銀銀%邱昆峰%王景瑞
조옥쇄%양립강%경민%염가반%곽효동%조은은%구곤봉%왕경서
金厂%铜金矿床%斑岩型%载金矿物%硫镍钴矿
金廠%銅金礦床%斑巖型%載金礦物%硫鎳鈷礦
금엄%동금광상%반암형%재금광물%류얼고광
Jinchang%Cu-Au deposit%porphyry style%gold-bearing mineral%siegenite
金厂铜金矿床是中国东北部一超大型斑岩型铜金矿床,J-0号矿体为矿床内一典型的斑岩型铜金矿体。J-0号矿体有3种载金矿物:硫镍钴矿、黄铁矿和黄铜矿。硫镍钴矿主要元素为Ni、Co、S,Ni 含量19.005%~28.14%,Co含量26.877%~34.971%,S含量40.242%~44.076%,矿物的Ni/Co 原子摩尔比为0.55~1.03,与其理论值Ni/Co≈1相近;矿物的(Ni,Co)/S原子摩尔比为0.68~0.74,与其理论值(Ni,Co)/S=0.75相吻合,其晶体化学分子式与(Ni,Co)3 S4相符。硫镍钴矿中的自然金的成色较高,在830~955之间。硫镍钴矿作为载金矿物,在金厂矿区和国内金矿床是首次发现,在世界范围内金矿床中也十分罕见,到目前为止还未发现相关报道。其在金厂矿区的发现填补了硫镍钴矿作为载金矿物领域的空白,为研究与完善金的成矿理论提供了关键证据,因此,这一发现存在重大的现实意义与地质意义。
金廠銅金礦床是中國東北部一超大型斑巖型銅金礦床,J-0號礦體為礦床內一典型的斑巖型銅金礦體。J-0號礦體有3種載金礦物:硫鎳鈷礦、黃鐵礦和黃銅礦。硫鎳鈷礦主要元素為Ni、Co、S,Ni 含量19.005%~28.14%,Co含量26.877%~34.971%,S含量40.242%~44.076%,礦物的Ni/Co 原子摩爾比為0.55~1.03,與其理論值Ni/Co≈1相近;礦物的(Ni,Co)/S原子摩爾比為0.68~0.74,與其理論值(Ni,Co)/S=0.75相吻閤,其晶體化學分子式與(Ni,Co)3 S4相符。硫鎳鈷礦中的自然金的成色較高,在830~955之間。硫鎳鈷礦作為載金礦物,在金廠礦區和國內金礦床是首次髮現,在世界範圍內金礦床中也十分罕見,到目前為止還未髮現相關報道。其在金廠礦區的髮現填補瞭硫鎳鈷礦作為載金礦物領域的空白,為研究與完善金的成礦理論提供瞭關鍵證據,因此,這一髮現存在重大的現實意義與地質意義。
금엄동금광상시중국동북부일초대형반암형동금광상,J-0호광체위광상내일전형적반암형동금광체。J-0호광체유3충재금광물:류얼고광、황철광화황동광。류얼고광주요원소위Ni、Co、S,Ni 함량19.005%~28.14%,Co함량26.877%~34.971%,S함량40.242%~44.076%,광물적Ni/Co 원자마이비위0.55~1.03,여기이론치Ni/Co≈1상근;광물적(Ni,Co)/S원자마이비위0.68~0.74,여기이론치(Ni,Co)/S=0.75상문합,기정체화학분자식여(Ni,Co)3 S4상부。류얼고광중적자연금적성색교고,재830~955지간。류얼고광작위재금광물,재금엄광구화국내금광상시수차발현,재세계범위내금광상중야십분한견,도목전위지환미발현상관보도。기재금엄광구적발현전보료류얼고광작위재금광물영역적공백,위연구여완선금적성광이론제공료관건증거,인차,저일발현존재중대적현실의의여지질의의。
Jinchang Cu-Ag deposit is a super-large scale porphyry Cu-Au deposit in Northeastern China.No.J-0 is a typical porphyry Cu-Au ore body in the deposit.There are three gold-bearing minerals in the J-0 ore body:siegenite,pyrite and chalcopyrite.Major element of the siegenite are Ni,Co and S.Ni constitutes 19.005%~28.14%,Co constitutes 26.877%~34.971% and S constitutes 40.242%~44.076% in the Siegenite.The atomic mol ratio of Ni/Co is 0.55~1.03,close to the theoretical value (Ni/Co≈1).The atomic mol ratio of(Ni,Co)/S is 0.68~0.74,tallying with the theoretical value [(Ni,Co)/S= 0.75],and the crystal chemical molecular formula is coincides with(Ni,Co)3 S4 .The purity of natural gold is high in the siegenite,between 830 and 955.As a gold-bearing mineral,it was the first time to discover siegenite in the Jinchang mining areas and gold deposits in China.It is also a rare finding for gold deposits throughout the world.By far,there are no related reports.The discovery in the Jinchang gold area has important factual and geological meaning,and made the discovery that siegenite is a new gold-bearing mineral,and it was found for the study and improvement of gold mineralization theory provides key evidence.