湘黔汞矿带中的黑辰砂和硒汞矿  

Metacinnabar and Tiemannite in Hunan-Guizhou (Xiangqian) Mercury Metallogenic Belt

作　　者：陈殿芬[1] 孙淑琼 

机构地区：[1]中国地质科学院矿床地质研究所

出　　处：《岩石矿物学杂志》1991年第1期58-62,共5页Acta Petrologica et Mineralogica

摘　　要：黑辰砂和硒汞矿是HgS-HgSe系列的端员矿物。黑辰砂产于湘黔汞矿带大洞喇、纸坊、茶田汞矿床,硒汞矿产于新晃汞矿床外围的蚀变石英岩中。本文通过对黑辰砂和硒汞矿的物理光学性质、化学成分、X光衍射及红外吸收光谱的研究,表明这两个矿物上述诸方面特征均很相似,但又表现出有规律的变化。Metacinnabar and tiemannite are end members of HgS-HgSe series. In metacinnabar, selenium is often seen in place of sulfur, and zinc in place of mercury; in tiemannite, sulfur is frequently in place of selenium. Like minerals in many isomorphous series, these two minerals are quite similar to each other and show regular variation in physical-optical properties, X-ray diffraction patterns and infrared absorption spectra.Metacinnabar, which is associated with such sulfides as cinnabar and sphalerite, was formed in a sulfides-rich environment at fairly low temperature (190-220℃). Tiemannite is associated only with quartz without such sulfides as sphalerite and cinnabar; it was therefore formed in a sulfides-poor environment at a hit higher temperature (230-265℃).

关 键 词：黑辰砂 硒汞矿 汞矿带 湖南 贵州 

分 类 号：P578.23[天文地球—矿物学]