摘要
红铊矿(Lorandite)是一种分布极少的分散元素独立矿物。本文报道了产于贵州滥木厂汞矿中的红铊矿,这在我国属首次报道。本文作了系统的矿物学研究并与国外资料作了对比,在此基础上讨论了矿物的成因和其作为找金指示矿物的可能性,以及直接利用富铊矿石等方面的意义。
Lorandite, a rare dispersed element mlneral, has been reported for the first time in China. It was discovered in a strata-bound mercury deposit at Xingren County, Guizhou Province and associated with cinnabar, realgar, orpiment, pyrite, marcasite, barite, etc.Lorandite has adamantine luster and is semi-transparent. Crystals of lorandite are perfect and normally occur in the form of prisms with the size ranging from 1 to 3mm. In reflected light it is greylsh-whlte with light blue tint. Strongly anisotropic, internal reflection bright red. Specific gravity=5.55. Moss hardness=2.5. Electron microprobe analysis (on average) gave (0%): T1 59.08, As 28.2, S 18.2, Hg 0.18, Sb 0.032, Au 0.111, Ag 0.107, Cd 0.053, In 0.072, Zn 0.022, Cu 0.012, Mn 0.016, Fe 0.016, Sn 0.066, Bi 0.031, Se 0.046, totaling 99.77, corresponding to Tl_(1.02) As_(1.03) S_2. DTA shows two endothermal peaks at 298—304℃ and at 574—581℃. The strongest lines in X-ray powder pattern are : 3.59, 2.985 and 2.890. Infrared spectrum shows four absorption peaks at 306, 330, 378 and 398cm^(-1).These data shed light on the origin of the Iorandite, and the possibility to serve as an indicator mineral for prospecting gold deposits and the significance in utilizing rich thallium ore.
出处
《矿物学报》
CAS
CSCD
北大核心
1989年第2期141-147,共7页
Acta Mineralogica Sinica
基金
国家自然科学基金
