摘要:含硒的块硫铜矿产于西秦岭邛莫金矿床中,与其伴生的矿物有硒汞矿、硒铅矿、硒锑矿、斜方硒镍矿、硒铜镍矿、硒质辉锑矿、自然金以及石英、重晶石等。含硒的块硫铜矿平均显微硬度VHN<,50>=247.5kg/mm<'2>,相当于摩氏硬度4.2。电子探针分析结果(ω,℅)为 :Sb25.79,Cu38.20,S21.12,Se12.76,Hg0.00~1.49(平均0.58),Ag0.00~0.33(平均0.09),As0.00~2.01(平均0.76)。根据成分中Se/(S+Se)比值(原子比)<0.2抑≥0.2,可将 所测矿物划分为含硒质块锑铜矿与硒质块硫锑铜矿。它们的化学分子式分别为:(Cu<,2.84>Hg<,0.01>)<,2,85>(Sb<,1.00>As<,0.07>)<,1.07>(S<,3.54>Se<,0.46>)<,4.00>和(Cu<,3.05>Gh<,0.03>)<,3.08>(Sb<,1.07>As<,0.03>)<,1.10>(S<,2.77)Se<,1.23>)<,4.00>。代表性的反射率(℅):(470nm)Rr'=22.84~22.50,Ra'=27.92~27.99;(550nm)Rr'=22.63~22.76,Ra'=27.79~28.11。