The present paper reports three lizard fossils from the Middle Pleistocene (493±55 ka B.P.) Qinling caves in Luonan County, Shaanxi, China. Two lacertids reported here, Eumeces sp. (Fig.1, 3～6) and Eremias sp. (...The present paper reports three lizard fossils from the Middle Pleistocene (493±55 ka B.P.) Qinling caves in Luonan County, Shaanxi, China. Two lacertids reported here, Eumeces sp. (Fig.1, 3～6) and Eremias sp. (Fig.1, 7～8) document the geologically first record of the fossil genus from China, and suggested that they are ancestors of modern genus and species in this area. The specimen of Conicodontosaurus is documented a new species: Conicodontosaurus qinlingensis sp. nov. (Fig.1, 1～2).展开更多
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,...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 size.The 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 bireflectance.Its polarization color is blue to grayish-brown and there is no internal reflection.The 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 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 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.展开更多
文摘The present paper reports three lizard fossils from the Middle Pleistocene (493±55 ka B.P.) Qinling caves in Luonan County, Shaanxi, China. Two lacertids reported here, Eumeces sp. (Fig.1, 3～6) and Eremias sp. (Fig.1, 7～8) document the geologically first record of the fossil genus from China, and suggested that they are ancestors of modern genus and species in this area. The specimen of Conicodontosaurus is documented a new species: Conicodontosaurus qinlingensis sp. nov. (Fig.1, 1～2).
文摘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 size.The 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 bireflectance.Its polarization color is blue to grayish-brown and there is no internal reflection.The 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 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 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.
