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人工合成立方晶体Bi38CrO60在自然界首次发现于中国陕西省洛南县驾鹿金矿床中,暂称之为未定名矿物。其共生和伴生矿物有黄铁矿、自然金、碲金矿、含氧金矿物等。常呈不规则粒状集合体,偶见立方体微晶(粒径小于0 05mm),棕黑色,金属光泽;HV=232 78kg/mm2,HM=4 15;D=14 10(3)g/cm3,Dx=14 08(2)g/cm3,n=3 14(3)。EPM8100探针分析Bi2O3为98 854%、CrO3为1 111%,合计99 965%,化学式为Bi38 009Cr0 995O60;CAMEBAX-SX51探针分析Bi2O3为98 862%,CrO3为1 112%,合计99 974%,化学式为Bi38 008Cr0 996O60。均可写为Bi38CrO60。X射线粉晶分析主要强度线d(I)(hkl)分别为0 3215(100),(310);0 27211(72),(321);0 17145(40),(530);0 1696(30),(600);0 1651(30),(611);0 1608(30),(620);0 29411(25),(222);0 3596(22),(220);0 2171(20),(332);0 1503(20),(631),等轴晶系,可能的空间群为Im3m;a=1 0181(1)nm,c/a=1,晶胞体积v=1 05529(1)nm3,z=1。1-Kp/Kc=0 019。Cr6+,Bi3+,O2-。未定名矿物和人工晶体的化学成分与X射线粉晶数据基本一致。
Synthetic cubic crystal Bi38CrO60 was first found in nature in the Lukang County, Shaanxi Province, China by deer gold deer deposit, temporarily referred to as undetermined minerals. Its symbiotic and associated minerals are pyrite, natural gold, tellurium gold, oxygenated gold minerals. Often irregular granular aggregates, and occasionally cubic crystallites (particle size less than 0 05mm), brown black, metallic luster; HV = 232 78kg / mm2, HM = 415; D = 1410 (3) g / cm3, Dx = 14 08 (2) g / cm3, n = 3 14 (3). EPM8100 probe analysis of Bi2O3 98 854%, CrO3 1 111%, a total of 99 965%, chemical formula Bi38 009Cr0 995O60; CAMEBAX-SX51 probe Bi2O3 98 862%, CrO3 112%, a total of 99 974% Chemical formula Bi38 008Cr0 996O60. Can be written as Bi38CrO60. The main intensity lines d (I) (hkl) of X-ray powder analysis are 0 3215 (100), (310); 0 27211 (72), (321); 0 17145 (40), (530); 0 1696 0 2951 (25), (222); 0 3596 (22), (220); 0 2171 (30), (600); 0 1651 (30), (611); 0 1608 A = 1 0181 (1) nm, c / a = 1, the unit cell volume v = 1 05529 (1) nm3, z = 1.1-Kp / Kc = 0 019. Cr6 +, Bi3 +, O2-. The chemical composition of unnamed minerals and artificial crystals is basically the same as that of X-ray powder.