新变种矿物——含汞银金矿  

A NEW VARIETY OF MINERAL——ARGENTIAN MERCURIAN GOID

作　　者：杨时惠[1] 张汉卿[2] 苏俊周[1] 傅德明[3] 徐明基 

机构地区：[1]中国地质科学院成都地质矿产研究所 [2]中国地质科学院矿床地质研究所 [3]四川省地质矿产局

出　　处：《地质论评》1990年第2期179-182,共4页Geological Review

摘　　要：含汞银金矿是含Ag、Hg的自然金变种,为金黄色,呈六边形、正方形自形晶以及毛发状、乳滴状、不规则状等形态。显微硬度H_v=91kg/mm^2,相当于H_M=3.04,反射率:589nm 70.35％。主要化学成分:Au 56.05—67.33％;Ag 18.29—31.06％;Hg 10—14.82％。含少量Cu,个别含Bi或Fe。简化式为:(Au_(0.52)Ag_(0.36)Hg_(0.09)Cu_(0.02))_(0.99)。X射线分析表明系等轴晶系,空间群为O_h^5Fm3m,α_0=0.40803nm,V=0.06793nm^3,Z=4。Argentian mercurian gold, a gold-yellow variety of natural gold containing Ag and Hg, occurs as hexagonal and tetragonal euhedral crystals in hairy, milky dro- plet or irregular forms. The mierohardness H_v=91kg/mm^2, equivalent to 3.04 on Mobs'scale, and the reflectance is 70.35%(589 nm). The main chemical components are: Au=56.05—67.33%, Ag=18.29—31.06% and Hg=10—14.82%, containing minor Cu and, in a few samples, Bi or Fe. The simplified formula is(Au_(0.52)Ag_(0.36) Hg_(0.09)Cu_(0.02))_(0.99). X-ray analysis suggests an isometric system; space group is O_h^5Fm3m, a_0=0.40803nm, V=0.06793nm^3 and Z=4.

关 键 词：矿物 变种 银金矿 含汞 

分 类 号：P618.504[天文地球—矿床学]