两种未定名硒矿物的研究

A STUDY ON TWO UNNAMED SELENIDE MINERALS

本文研究的两种未定名硒矿物产于贵州省504铀汞银多金属矿床内的含铀一晒方解石脉中。经JCXA－733型电子探针X射线显微分析仪分析，其平均化学成分（重量％）分别为：Se48·80，S0．11，CU17．42，Hgl．65，Sb34．08，Ni0．02，FeO．05，As0．58及Se38．89，SI．65，Cu1779，HgZI．63，Sblg．54，Ni003，Fe0．15，As0．33。它们的化学式分别为：（Cu。。sHgo．03）。98（Sbo．97A80．03）1（Se。0150．of）2，02及（CUgHg）。。S－。65Sb0．27－。33（Se，S）。96－l．of．它们的简化式分别为：Cllsbse。及（Cu，Hg）1－。Sbx（Se，S）。

Two unnamed selenide minerals were found in U-Se-bearing calcite veins in a U-Hg-Mo poly-metallic deposit in Guizhou. JCXA-733 type electron microprobe analysis of the two minerals gave:Se 45. 80, S 0. 11, Cu 17. 42, Hg 1. 65, Sb 34.08, Ni 0. 02, Fe 0. 05, As 0. 58, Se 38. 89, S 1. 65,Cu 17. 79, Hg 21. 63, Sb 19. 45, Ni 0. 03, Fe 0. 15, and As 0. 33 (% ). Their chemical formulae are (Cu0.95Hg0.03 ) 0. 98 (Sb0. 97 As0. 03 ) 1 (S2.01 S0.01 )2.02and (Cu, Hg ) 0. 76-0. 65 Sb0. 27-0. 33 (Se, S ) 0. 96-1. 01. Their simplified formulae are CuSbSe2 and (Cu, Hg)1-xSbx (Se, S).