南华砷铊矿床雄黄标型特征  

TYPOMORPHIC CHARACTERISTICS OF REALGAR IN THE NANHUA As-Tl DEPOSIT

作　　者：张忠[1] 张兴茂[1] 张宝贵[1] 陈晔虞 龚国洪[1] 

机构地区：[1]中国科学院地球化学研究所,贵阳550002

出　　处：《矿物学报》1996年第3期315-320,共6页Acta Mineralogica Sinica

基　　金：国家自然科学基金;中国科学院矿床地球化学开放研究实验室基金

摘　　要：雄黄是云南省南华砷铊矿床中最主要工业矿物。它不仅与铊矿物共生，而且本身含有较高的铊，可高达（n×10～n×100）×10-6。砷铊矿床雄黄与砷矿床雄黄相比较在产出条件，微量元素、硫同位素和晶面间距等方面均有不同程度差别。前者富铊，低氯、高氟和硼，富轻硫同位素，相对贫稀土元素；后春富氯，低铊，高碘，富重硫同位素，相对贫碱土族元素。这些标型特征不仅有助于南华砷铊矿床进一步开发，而且有助于含雄黄的热液矿床，特别是As、Hg、Tl、Sb、Au等矿床的找矿勘探。Realgar is the most important mineral of commercial value in the Nanhua As-Tl deposit,Yunnan Province. It not only coexists with Tl minerals, but also contains rather high Tl Lup to n×10~n ×100) × 1O-6]. Realgar occurring in As-Tl deposits is considerably different from that in Tl deposits in occurrence, trace elements, sulfur isotopes and distance between crystal planes.The former is rich in Tl but poor in Cl, high in F and B, and rich in light sulfur isotope, relatively depleted in REE; the latter is rich in Cl but poor in Tl, high in I, rich in heavy sulfur isotope, and relatively depleted in alkali-earth group elements. All these typomorphic characteristics are helpful for the further development of the Nanhua As-Tl deposit, but also for prospecting of realgar-bearing hydrothermal deposits, especially those of As, Hg, Tl, Sb, Au, etc.

关 键 词：砷矿床 铊矿床 雄黄 标型特征 

分 类 号：P618.64[天文地球—矿床学] P618.88[天文地球—地质学]