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新矿物汉江石的理想分子式为Ba2CaV23+[(Si3AlO10)(OH)2]F(CO3)2。矿物呈黄绿色、深绿色,显微镜下呈浅绿色、淡绿色;单斜晶系,空间群为C2,a=0.52050(12)nm,b=0.9033(2)nm,c=3.2077(8)nm,β=93.49(8)°,V=1.5054(8)nm3,Z=4;二轴晶,正延性,负光性,一组完全解理,干涉色为三级绿,多色性明显,浅绿色-黄绿-深绿色;折射率α=1.615,β=1.655,γ=1.700(589 nm),2Vobs=114°～115°,2Vcalc=88.8°;显微硬度平均值203 kg/mm2,相当于莫氏硬度4;实测密度平均3.69 g/cm3,计算密度3.78 g/cm3。X射线粉晶衍射的强谱线有1.5866 nm(7)(002)、0.5340 nm(91)(006)、0.4010 nm(10)(ī14)、0.3209 nm(23)(027)、0.2676 nm(100)(ī110)、0.2294 nm(29)(ī37)和0.2008 nm(11)(228)。汉江石的晶体结构由硅酸盐结构单元TOT(二八面体型)和碳酸盐结构单元Ba2Ca(CO3)2F交替组成,可能有3个多型,即1M型,2M型和3T型。
The ideal formula for the new mineral Hanjiang stone is Ba2CaV23 + [(Si3AlO10) (OH) 2] F (CO3) 2. The minerals are yellow-green, dark green and light green and light green under the microscope. The monoclinic space group is C2 with a = 0.52050 (12) nm, b = 0.9033 (2) nm and c = 3.2077 , β = 93.49 (8) °, V = 1.5054 (8) nm3, Z = 4; biaxial crystals, positive ductility and negative light. One set of complete cleavage, interference color is tertiary green, Light green-yellow-green-dark green; refractive index α = 1.615 β = 1.655 γ = 1.700 (589 nm) 2Vobs = 114 ° -115 °, 2Vcalc = 88.8 °; average microhardness 203 kg / Equivalent to Mohs hardness of 4; measured density average 3.69 g / cm3, calculated density of 3.78 g / cm3. The strong lines of X-ray powder diffraction are 1.5866 nm (7) (002), 0.5340 nm (91) (006), 0.4010 nm (10) (ī14), 0.3209 nm (23) ) (ī110), 0.2294 nm (29) (ī37) and 0.2008 nm (11) (228). The crystal structure of Hanjiang stone is composed of TOT (octahedron type) silicate structural units and Ba2Ca (CO3) 2F carbonate structural units. There may be 3 polymorphs, namely 1M, 2M and 3T.