Kuranakhite Discovered in China for the First Time

作     者：周新春 刘良 王世忠 王焰 杨建琨 郭能霖 李广慧 胡建民 

作者机构：The 14th Branch Team for Gold Exploration Chang’an Department of Geology Northwest University Xi’an Gold Headquarters of Ministry of Metallurgical Industry Beijing 

出 版 物：《Chinese Journal Of Geochemistry》 (中国地球化学学报)

年 卷 期：1998年第17卷第1期

页      面：77-80页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

主　　题：金矿床 陕西 自然金 黄铁矿 石英 碲金矿 

摘      要：Kuranakhite was firstly discovered in the oxidezed zone of the Kuranakh gold mine,southern Russia,and since thewn there has been no report on it .Kuranakhite in this paper was discovered in the Jialu gold mine,Luonan,County,Shaanxi Province,The mineral often occurs as irregular granular aggregates varying from 0.05 to 0.25 mm in *** mineral is light brown to brown in color,translucent,brown in steak,and vitreous in luster,Hv is 231-439kg/mm^2,HM=4-5 and measured density is 6.72(2)g/cm^3,Its reflection color is bluish gray to light-blue and it shows middle anisotropism and weak *** polarization color is blue to grayish-brown and there is no internal *** index of refraction is: Na=2.01,Nβ=1.98,Nγ=1.96,The average composition is PbO 45.40wt%,MnO2 16.41wt%,TeO3 38.10wt%,totalling 99.91wt%,the empirical formula is Pb0.99 Mn0.92Te1.06O6,which can be simplified as *** 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 kuranakhite 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)nm^3;z=2,and calculated density=6.66(1)g/cm^3.