论文部分内容阅读
准水丝铀矿呈浅黄色,针状晶体,沿c轴延长。二轴晶正光性,2V_((计算))为47.7°。折光率为:N_p=1.640,N_m=1.658,N_g=1.760。光性方位为N_g∥C。矿物在紫外光照射下不发荧光。斜方晶系。空间群可能为Immm,晶胞参数为α_0=6.51,b_0=8.78,c_0=4.21,Z=2,计算比重4.67。X射线粉末谱强线为5.22(100)(110),3.54(80)(101),4.38(50)(020),3.79(50)(011)。根据电子探针分析得到矿物的化学成分为UO_383.4％或UO_488.1％,H_2O约为10％(热重分析)。准水丝铀矿产于扎伊尔沙巴省申戈洛布维铀矿床氧化带,在一块标本上同时发现有以下次生铀矿物:菱铀矿、黄钙铀矿、橙红铀矿、
Aquiferous uraninite is pale yellow, acicular crystals extending along the c-axis. The biaxial crystallisation was 2V ((calculated)) 47.7 °. Refractive index: N_p = 1.640, N_m = 1.658, N_g = 1.760. Optical orientation is N_g∥C. Minerals do not fluoresce under UV light. Orthorhombic system. The space group may be Immm. The unit cell parameters are α_0 = 6.51, b_0 = 8.78, c_0 = 4.21, Z = 2, and the specific gravity is 4.67. The X-ray powder showed 5.22 (100) (110), 3.54 (80) (101), 4.38 (50) (020), 3.79 (50) (011). According to the electron probe analysis, the chemical composition of the mineral is UO_383.4% or UO_488.1%, H_2O is about 10% (TGA). The quasi-hydrothermal uranium deposit is located in the oxidation zone of the Shengeluobu uranium deposit in Sabah, Zaire. At the same time, the following secondary uranium minerals are found on one specimen: Ling uranium ore, Huangya uranium ore, orange red uranium ore,