|
|||||
|
|
| 未定名矿物(Bi38CrO60)的矿物学研究 | |
| 引用本文： | 周新春,袁周伟,贾小梅,王开崎,李广文,李成玉,刘良,舒桂明,徐平,翟明国.未定名矿物(Bi38CrO60)的矿物学研究[J].黄金地质,2004,10(4):45-54. |
| 作者姓名： | 周新春 袁周伟 贾小梅 王开崎 李广文 李成玉 刘良 舒桂明 徐平 翟明国 |
| 作者单位： | 1. 武警黄金第八支队,新疆,乌鲁木齐,830057 2. 西北大学,陕西,西安,710069 3. 北京大学,北京,100871 4. 中国科学院,地质与地球物理研究所,北京,100028 |
| 基金项目： | 武警黄金指挥部科研专项基金(HJ96-2-4);陕西省教委科学基金资助项目 |
| 摘 要： | 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0.05 mm),棕黑色,金属光泽;HV=232.78 kg/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0.321 5(100),(310);0.272 11(72),(321);0.171 45(40),(530);0.169 6(30),(600);0.165 1(30),(611);0.160 8(30),(620);0.294 11(25),(222);0.359 6(22),(220);0.217 1(20),(332);0.150 3(20),(631),等轴晶系,可能的空间群为Im3m;a=1.018 1(1)nm,c/a=1,晶胞体积v=1.055 29(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. |
| 关 键 词： | 未定名矿物 兼容性 价态分析 矿物成因 陕西 |
| 文章编号： | 1006-558X(2004)04-0045-10 |
| 修稿时间： | 2004年9月27日 |
Mineragraphy study of Unnamed Mineral(Bi38CrO60) |
|
| ZHOU Xin-chun,YUAN Zhou-wei,JIA Xiao-mei,WANG Kai-qi,LI Guang-wen,LI Cheng-yu,LIU Liang,SHU Gui-ming,XU Ping,ZHAI Ming-guo.Mineragraphy study of Unnamed Mineral(Bi38CrO60)[J].Gold Geology,2004,10(4):45-54. | |
| Authors: | ZHOU Xin-chun YUAN Zhou-wei JIA Xiao-mei WANG Kai-qi LI Guang-wen LI Cheng-yu LIU Liang SHU Gui-ming XU Ping ZHAI Ming-guo |
| Institution: | ZHOU Xin-chun~1,YUAN Zhou-wei~1,JIA Xiao-mei~1,WANG Kai-qi~1,LI Guang-wen~1,LI Cheng-yu~1,LIU Liang~2,SHU Gui-ming~3,XU Ping~4,ZHAI Ming-guo~4 |
| Abstract: | Bi_(38)CrO_(60):The artificial square crystal was first discovered in nature at Jialu gold deposit in Luonan County of Shaanxi province. Temporarily, people called it Unnamed Mineral. It is closely associated with pyrite, nature gold, calaverite, oxygen-bearing gold minera et al and appeared as irregular grained aggregates, the cubic crystals(<0.05 mm) are rare, brownish black, metals luster; H_V=232.78 kg/mm~2,H_M=4.15; D=14.10(3) g/cm~3,D_x=14.08(2) g/cm~3; n=3.14(3). The microprobe analysis are:in EPM8100,Bi_2O_3 is 98.854%, CrO_3 is 1.111%, total is 99.965%; the chemistry type is Bi_(38.009)Cr_(0.995)O_(60); in CAMEBAXSXS51,Bi_2O_3 is 98.862%, CrO_3 is 1.112%, total is 99.974%,the chemistry type is Bi_(38.008)Cr_(0.996)O_(60). Both can been write as Bi_(38)CrO_(60); the main strong line d(I)(hkl) in X-ray crystallography analysis is 0.321 5(100),(310); 0.272 11(72),(321); 0.171 45(40),(530); 0.169 6(30),(600); 0.165 1(30),(611); 0.160 8(30),(620); 0.294 11(25),(222); 0.359 6(22),(220); 0.217 1(20),(322); 0.150 3(20),(631) respectively; isometric system,the possible space cluster is Im3m;a=1.018 1(1)nm,c/a=1, crystal volume v=1.055 29(1) nm~3,z=1,1-K_p/K_c=0.019.Cr~(6+),Bi~(3+),O~(2-). The composition and X-ray crysytal quantity of Unnamed Mineral and artificial crystal (Bi_(38)CrO_(60)) are consistence. |
| Keywords: | Unnamed Mineral compatibility valence analysis origin of mineral Shaanxi |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |