【摘要】 本文对产在上震旦统陡山沱组和灯影组海相碳酸盐岩层中的徐家山层控锑矿床中的主要矿石矿物——辉锑矿,进行了产状特征、矿物共生组合、成矿阶段、化学成分、某些物理性质、矿物包裹体特征以及硫、氧和分散铅同位素组成特征的研究。在论述其标型特征的基础上,讨论了徐家山辉锑矿的成因问题。更多还原

【Abstract】 The Xujiashan stratabound antimony deposit occurs along the interstratal compressive fractured zone of silicified limestone in the carbonate rocks of Upper Sinian Doushantuo and Dengying Formation. The typomorphic study of stibnite from this deposit includes mode of occurrence, chemical composition, physical properties, mineral inclusions and isotopic compositions of sulfur,oxygen and dispersed lead.The data obtained provide some information and typomolphic characteristics for the type of the deposit and the origin of stibnite.Relatively systematic data on chemical composition, trace element contents, unit cell parameter, some physical properties and isotopic compositions of sulfur, oxygen and dispersed lead in stibnite from this deposit are given in this paper.our research on stibnite of metallogenic stage Ⅰ and Ⅱ has yielded the following results:1. The stibnite metallization might be divided into synsedimentary metallogenic period （Ⅰ） and metallogenic period （Ⅱ） of underground hydrothermal transformation and enrichment, and the latter can be subdivided into four metallogenic stages. Ⅱ₁, Ⅱ₂,Ⅱ₃ and Ⅱ₄.2. The stibnite contains rather high selenium and arsenic（Se = 0.08—1.45% and As = 0.078—0.118%）.3. The unit cell parameters of stibnite are given in Table 3.4. Stibnites all have positive δ³⁴S values （varying from+ 12.1 to+ 14.2‰） and are characterized by the enrichment in heavy sulfur isotopes. Sulfur in the stibnite is derived from sedimentary sources.更多还原