绿砷钡铁石在广西的发现  

DUSSERTITE DISCOVERED IN GUANGXI

作　　者：赖来仁[1] 李艺[1] 

机构地区：[1]中国有色金属工业总公司矿产地质研究院,桂林541004

出　　处：《矿物学报》1991年第1期83-85,共3页Acta Mineralogica Sinica

摘　　要：本文研究了在广西德保铜锡矿床氧带化中发现的绿砷钡铁石,给出了它的物理性质、化学成分和晶胞参数等矿物学数据。Dussertite was found in the oxidation zone of the Debao skarn-type Cu-Sn ore deposit in Guangxi. The mineral is green-yellow in color, short pillar in form, glassy in luster, transparent, H=3.5, D_(calc)=4.1. Uniaxial(-), refractive indices ε=1.8420, ω=1.8515. Electron microprobe analysis gave: Fe_2O_3 33.85, As_2O_5 33.96,. BaO 23.72, and H_2O 9.19%. Calculated chemical formula is Ba_(1.05)Fe_(2.89) (AsO_4)_(2.01)(OH)_(4.96)·H_2O. The strongest lines in the X-ray powder pattern are 3.13(021, 113) (10), 2.33(122, 107) (7), 2.02 (303,033) (7), 6.02 (101)(6), 3.70(110) (6), 1.863 (220) (6), and 2.58(024) (5).Calculated cell dimensions a=7.41., c=17.53 γ=120°, Z=3. It is of hexagonal system.

关 键 词：绿砷钡铁石 砷酸盐矿物 硫化物矿床 氧化带 广西 钼锡矿床 晶胞参数 化学成分 

分 类 号：P578.92[天文地球—矿物学]