摘要
铋砷黝铜矿产于广东陆丰中低温热液黄铁矿矿床中，呈它形粒状嵌布在黄铁矿内，粒径0．05～0．22mm，与黄铜矿、针硫铋铝矿共生。反射免呈灰色微带蓝色，均质性。显微硬度Hv＝295．5kg／mm2。电子探针成分分析（平均值）为：S24.4％，Cu38．25％，As13．03％，Bi17.人83％，Sb0．48％，Zn2．39％，Fe2.13％，Te1．47％，化学式为：Cu10（Fe0.65Zn0.63Cu0．49）1．77（As2.97Bi1．46Sb0．07）4、50（S12．8Te0.20）13。X射线粉晶衍射强线：2．95（10），2．55（3），1．866（5），1．727（4），1．041（5）。晶胞参数α＝1．0218nm。
Bismuth tennantite is a rare mineral discovered in a meso-epithermal pyrite deposit in Guangdong. Bismuth tennantite occurs as xenomorphic grains measured at 0. 05 ~ 0. 02mm in pyrite. The associated minerals include chalcopyrite and aikinite. Under microscope the reflection color is grey with a faint blue tint. Hv= 295. 5kg/mm2.Electron microprobe analysis gave S 24. 4%, Cu 38. 25/%, As 13. 03%, Bi 17. 83%, Sb 0. 48%, Zn 2. 39 %, Fe 2. 13 %and Te 1. 47 %. The calculated chemical formula is Cu10 (Fe.-56Zn0.63 Cu0.49 )1.77 (As2.97Sb0.07Bi1.46 )4.50 (S12.8Te0.20)13. The X-ray powder pattern of bismuth tennantite is identical with that of tetrahedrite. Unit cell parameter a= 1. 021 9nm. The strongest lines in the powder diffraction pattern are 2. 95(10), 2. 55(3), 1. 866(5), 1. 727(4) and 1. 041 (5).
出处
《矿物学报》
CAS
CSCD
北大核心
1996年第3期274-277,T001,共5页
Acta Mineralogica Sinica
关键词
铋砷黔铜矿
黄铁矿矿床
矿物
bismuth tennantite
pyrite deposit
Guangdong
