Hanjiangite, a New Barium-Vanadium Phyllosilicate Carbonate Mineral from the Shiti Barium Deposit in Southern Shanxi Province, China
摘要
Hanjiangite is found in the Shiti barium deposit in the Dabashan region, China. Hanjiangite was collected from lenticular witherite ore bodies and witherite-barite-quartz veins cutting carbonaceous slates. It is found as disseminations in both settings. It occurs as thin, euhedral, tetragonal, tabular crystals and anhedral grains. Grain size commonly varies from 0.05 to 4 mm and occasionally reaches 15 mm. It is yellow-green or dark-green. The difference is observed in the interlayer, where instead of only Ba (like in chernykhite) there are also Ca atoms and (CO3) groups. A hanjiangite has possibly three polytypes, namely 1M-type, 2M-type and 3T-type.