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Kuranakhite was firstly discovered in the oxidized zone of the Kuranakh gold mine,southern Russia, and since then there has been no report on it. Kuranakhite in this paper wasdiscovered in the Jialu gold mine, Luonan County, Shaanxi Province. The mineral often occursas irregular granular aggregates varying from 0.05 to 0.25 mm in size. The mineral is lightbrown to brown in color, translucent, brown in steak, and vitreous in luster. Hv is 231 -439kg/mm2, HM =4 ~ 5 and measured density is 6. 72(2)g/cm3. Its reflection color is bluish-gray to light-blue and it shows middle anisotropism and weak bireflectance. Its polarization col-or is blue to grayish-brown and there is no internal reflection. The index of refraction is: Na= 2.01, N9 = 1. 98, N. = 1. 96. The average composition is PbO 45. 40wt %, MnO216. 41wt%, TeO3 38. 10wt%, totalling 99. 91wt%. The empirical formula is Pb0.99Mn0.92Te1.06O6, which can be simplified as PbMnTeO6. Principal lines in the X-ray power pattern[d(I)(hkl) ] are: 0. 341 (100), (111); 0. 2556(60), (130); 0. 2043 (50), (041); 0.1666(20), (310); 0.1598(40), (241); and 0.1472(15), (330). It was determined that ku-ranakhite is orthorhombic; its space group may be C; a =0. 511(1) nm, b =0. 891(2)nm, c=0. 532(1)nm, a: b = 0. 57, c: b = 0. 60; V=0. 242 (3) nm3; Z = 2, and calculated densi-ty = 6. 66 (1) g/cm3.
Kuranakhite was initially discovered in the oxidized zone of the Kuranakh gold mine, southern Russia, and then then there has been no report on it. Kuranakhite in this paper wasdiscovered in the Jialu gold mine, Luonan County, Shaanxi Province. The mineral often occursas irregular The granular aggregates were varied from 0.05 to 0.25 mm in size. The mineral is lightbrown to brown in color, translucent, brown in steak, and vitreous in luster. Hv is 231 -439 kg / mm 2, HM = 4-5 and measured density is 6. 72 (2) g / cm3. Its reflection color is bluish-gray to light-blue and it shows middle anisotropism and weak bireflectance. Its polarization col-or is blue to grayish-brown and there is no internal reflection. The index of refraction 100%, totalling 99. 91wt%. The empirical formula is: Na = 2.01, N9 = 1.98, N. = 1. 96. The average composition is PbO 45. 40wt%, MnO216. 41wt%, TeO3 38. 10wt% Pb0.99Mn0.92Te1.06O6, which can be simplified as PbMnTeO6. Principal lines in the X-ray power pattern [d (I) (hkl)] are: 0,041 (100), (111); 0.2556 (60), (130); 0. 2043 (50), (041); 0.1666 (20), (310); 0.1598 (40) ; and 0.1472 (15), (330). It was determined that ku-ranakhite is orthorhombic; its space group may be C; a = 0. 511 (1) nm, b = 0.891 (2) nm, c = (3) nm3; Z = 2, and calculated densi-ty = 6.66 (1) g / cm3.