云南白显锰矿产于中三叠统法郎组地层中,其主要矿石矿物是钡镁锰矿。矿物属沉积成因,结晶细微,局部呈沿c轴延长的细小柱状和纤维状。矿物点群2/m,常见单形:斜方柱{110}、平行双面{100}和{001}。晶胞参数:a_0=0.9758nm,b_0=0.2848nm,c_0=0.9640nm,β=88.98°,V=0.26786nm~3,Z=1。矿物反射率为18.60～25.65,相对密度3.67,文中还列出了红外光谱和差热分析新资料。 Yunnan white Xian manganese ore production in the Triassic Falang Formation strata, the main ore minerals are barium manganese ore. Genesis of mineral deposits, crystal subtle, locally along the c-axis elongated columnar and fibrous elongated. Mineral point group 2 / m, common simplex: rhombic column {110}, parallel double sided {100} and {001}. Cell parameters: a_0 = 0.9758 nm, b_0 = 0.2848 nm, c_0 = 0.9640 nm, β = 88.98 °, V = 0.26786 nm~3, Z = 1. Mineral reflectivity of 18.60 ~ 25.65, the relative density of 3.67, the article also lists the infrared spectroscopy and differential thermal analysis of new data.