Jul, 2001
Mineral chemistry and associations of Bi-Te(S,Se) minerals from China
NEUES JAHRBUCH FUR MINERALOGIE-MONATSHEFTE
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- Volume
- 2001(7)
- Number
- 7
- First page
- 289
- Last page
- 309
- Language
- English
- Publishing type
- Publisher
- E SCHWEIZERBARTSCHE VERLAGS
Microprobe analyses and observed phase associations have revealed the occurrences of a series of Bi-Te(S,Se) minerals from various ore deposits, genetically related to the Yanshanian granite, in China. They include tetradymite (Bi2Te2S), tsumoite (BiTe), sulphotsumoite (Bi3Te2S), pilsenite (Bi4Te3), joseite-A (Bi4TeS2), joseite-B (Bi4Te2S), hedleyite (Bi8Te3), and unnamed phases Bi2Te, Bi-6(Te,Se)(3) and Bi4Te2Se. The substitutions among Te, S and Se in selenian joseite-B, Bi-4(Te,Se,S)(3), were recognized, suggesting the presence of a complete solid solution between Bi4Te2S and Bi4Te2Se. The independent phases in the Bi-Te system seem to be composed of five limited solid solutions, corresponding to Bi2Te3, Bi2Te2, Bi4Te3, Bi2Te and Bi8Te3. The substitution between Te and S based on Te: S = 2: 1 and 1: 2 may yield ordered sulphotellurides with the compositions centered around the ideal formulae.
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- ISSN : 0028-3649
- Web of Science ID : WOS:000170174300001