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Crystal structure and thermal behavior of Bi6 Te2 O15 : investigation of synthetic and natural pingguite
Citation
Nenert, G and Missen, OP and Lian, H and Weil, M and Blake, GR and Kampf, AR and Mills, SJ, Crystal structure and thermal behavior of Bi6 Te2 O15 : investigation of synthetic and natural pingguite, Physics and Chemistry of Minerals, (47) Article 53. ISSN 1432-2021 (2020) [Refereed Article]
 | PDF (Fully published version) Not available 2Mb | | PDF (Characterisation of natural and synthetic pingguite, a bismuth tellurate mineral found in oxidation zone of mineral deposits and potentially in oxidation of thermoelectric devices.) Not available 2Mb |
DOI: doi:10.1007/s00269-020-01121-7
Abstract
The previously unknown crystal structure of pingguite was determined and refned from laboratory X-ray powder difraction
data using a synthetic sample. Additional single crystal difraction of natural pingguite confrms that the crystal structure
of the synthetic sample is identical to the natural mineral. This new crystal structure calls for a revised chemistry of the rare
mineral pingguite to Bi6Te2O15 instead of the previously reported formula Bi6Te2O13. Pingguite contains TeVI only and not
TeIV as previously reported. Pingguite undergoes an irreversible phase transition around 840 ◦C which is characterized by a
loss of oxygen and a reduction from TeVI to TeIV resulting in a 훿-Bi2O3 like type structure. In addition, we report the Raman
spectroscopic data on the natural pingguite.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Pingguite; Tellurate; Crystal structure; High-temperature transformation; Blue Bell, California,USA |
| Research Division: | Earth Sciences |
| Research Group: | Geology |
| Research Field: | Mineralogy and crystallography |
| Objective Division: | Mineral Resources (Excl. Energy Resources) |
| Objective Group: | Other mineral resources (excl. energy resources) |
| Objective Field: | Other mineral resources (excl. energy resources) not elsewhere classified |
| UTAS Author: | Missen, OP (Dr Owen Missen) |
| ID Code: | 154968 |
| Year Published: | 2020 |
| Web of Science® Times Cited: | 3 |
| Deposited By: | CODES ARC |
| Deposited On: | 2023-01-20 |
| Last Modified: | 2023-01-25 |
| Downloads: | 0 |
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