摘要
赤路矿(chiluite),是一种含铋、碲、钼、氧的新矿物,化学分子式是Bi_6Te_2Mo_2O_(21)。 赤路矿产在辉铋矿石英脉中,与硫碲铋矿、辉钼矿、钼铋矿共生,常呈羽毛状或不规则粒状,有时可见六边形晶体,粒度一般<30μm,反光显微镜下呈灰色,弱非均质,反射率560nm,R′g 18.10％,R′p 17.15％,透射光下褐色,一轴晶负光性,折光率ω=2.4,ε=2.3,硬度3.2,比重3.65。X射线粉晶分析,赤路矿属六方晶系,主要线条:d_(meas)A(I)(hkl)是3.300(10)(004),3.050(9)(104),2.510(5)(105),2.060(5)(312),1.655(5)(008)。电子探针分析结果,Bi61.66,Te11.19,Mo10.29,O16.06。 在400-900℃条件下合成了赤路矿的同质多象晶体,并进行了红外光谱,差热分析及电子能谱测定元素价态等研究工作。
Chiluite is a new mineral containing Bi, Te, Mo and O with an ideal ch-emical formula of Bi_6Te_2MO_(21)·The mineral was found in quartz veins associatedwith bismuthinite, molybdenite, joseite, koechlinite and cassiterite. The mine-ral is normally plumose or irregular in shape, being rarely hexagonal underthe microscope. Individual grain gize<30μm, microhardness=180kg/mm^2, Mohs'hardness=3. 2, micro density=3. 65. Under the microscope with reflected light it is grey in colour and appearsto be weakly anisotropic. The determined reflectivity at 560nm R%(Ng)=18.10,R%(Np)=17.15. Under the microscope with transmitted light it is brown andappears to be anisotropic with uniaxial crystal. Negatively optical, refractiveindex ω=2. 4, ε=2.3. Chiluite is of hexagonal symmetry. The strongest diffraction lines {d in A(I) (hkL)} are: 3.300(10) (004), 3.050(9) (104), 2.510(5) (105), 2.060(5) (312),and 1. 655(5) (008). Its cell parameters are: α=8. 979A and c= 13. 207A. Electron microprobe analysis of 24 chiluite samples gave(%): Bi 61.66,Te 11.19, Mo 10.29, O 16.08. At 400-900℃, allomorphs of chiluite wereexperimently synthesized. Some research work has been done on the vallencyof elements in synthesized chiluite by infrared spectrometry, differerential the-rmal analysis, and electron-energy spectrometry.
出处
《矿物学报》
CAS
CSCD
北大核心
1989年第1期9-14,97-98,共6页
Acta Mineralogica Sinica
关键词
赤路矿
新矿物
words chiluite
new mineral
Fujian
