摘要
本文锌黝铜矿产于四川冕宁某铅锌矿床中。铅锌矿床为原生沉积成因。后受低级区域变质作用。对锌黝铜矿作了电子探针分析和X射线粉晶分析。两个锌黝铜矿颗粒的电子探针分析结果(wt％)是:Cu 36.95—37.63,平均37.29,Ag 0.58—1.39,平均0.99;Zn 7.08—7.53,平均7.31,Fe 0.22—0.26,平均0.24,Sb 27.19—27.69,平均27.58;As 2.37—2.51,平均2.44;S 24.35—24.67,平均24.51。相对平均化学成分的晶体化学式为,(Cu_(9-84) Ag_(0.16))_(10.00)(Zn_(1.90)Cu_(0.14) Fe_(0.07))_(2.11) (Sb_(3.85) As_(0.55))_(4.40) S_(13),简化式为Cu_(10) Zn_2Sb_4S_(13)。
Zincian tetrahedrite occurs in a certain Pb-Zn ore deposit at Mianning, Sichuan. The Pb-Zn ore deposit is primary sedimentary in genesis,which underwent low-grade regional metamorphism.Zincian tetrahedrite was analyzed by electron probe and X-ray powder diffraction. Electron probe analysis of two grains gave: Cu 36.95—37.63 (37.29 on average) , Ag 0.58—1.39 (0.99), Zn 7.08—7.53 (7.31) ,Fe 0.22—0.26 (0.24) ,Sb 27.19—27.96(27.58), As 2.37—2.51 (2.44),and S 24.35—24.67 (24.51).The chemical formula is(Cu_99.84)Ag_(0.16))_(10.00) (Zn_(1.90)Cu_(0.14)Fe_(0.07))_(2.11)(Sb_(3.80)As_(0.55))_(4.40)S_(13),which is simplified as Cu_(10)Zn_2Sb_4S_(13).
出处
《矿物学报》
CAS
CSCD
北大核心
1990年第3期232-234,共3页
Acta Mineralogica Sinica
关键词
锌黝铜矿
铅锌矿
四川
矿床
zincian tetrahedrite
Pb-Zn ore deposlt
Sichuan
