UM1991-19-Se:AsCo
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Formula:
(Co,Ni)AsSe
Co-described with jolliffeite. Found as small, discrete, anhedral grains, with clausthalite and some unidentified selenides of Bi and Pb-Bi-Ag, within 'pitchblende'.
Optically quite similar to jolliffeite. Could represent a Se analogue of either cobaltite or glaucodot.
Optically quite similar to jolliffeite. Could represent a Se analogue of either cobaltite or glaucodot.
Classification of UM1991-19-Se:AsCo
Notes:
Unnamed (probably valid)
Optical Data of UM1991-19-Se:AsCo
Anisotropism:
slightly more anisotropic than jolliffeite
Chemical Properties of UM1991-19-Se:AsCo
Formula:
(Co,Ni)AsSe
Elements listed:
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.592Å | (100) |
| 2.365Å | (80) |
| 1.746Å | (60) |
Comments:
the pattern couldn't be indexed; it differs from that of synthetic CoAsSe
Synonyms of UM1991-19-Se:AsCo
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for UM1991-19-Se:AsCo
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cabri, L.J., Laflamme, J.H.G., Roberts, A.C., Criddle, A.J., Hulbert, L.J. (1991): Jolliffeite and unnamed CoAsSe; two new arsenoselenides from the north shore of Lake Athabasca, Saskatchewan. Can. Min.: 29: 411-418
Smith, D.G.W., Nickel, E.H. (2007): A System of Codification for Unnamed Minerals: Report of the SubCommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. Canadian Mineralogist: 45: 983-1055; http://nrmima.nrm.se (2016)
Internet Links for UM1991-19-Se:AsCo
mindat.org URL:
https://www.mindat.org/min-52065.html
Please feel free to link to this page.
Please feel free to link to this page.
Mineral Dealers:
Localities for UM1991-19-Se:AsCo
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Canada | |
| Cabri, L.J., Laflamme, J.H.G., Roberts, A.C., Criddle, A.J., Hulbert, L.J. (1991) Jolliffeite and unnamed CoAsSe: two new arsenoselenides from the north shore of Lake Athabasca, Saskatchewan. Canadian Mineralogist: 29: 411-418. |
Morocco | |
| Vinogradova, R. A.; Uljanov, A. A.; Korotaeva, N. N.; Obraztsov, V. V.; Azizi, S. M. R.; Maasha, L. (1994): Selenium-bearing sulfarsenides of the cobaltite-gersdorffite series from deposits of Bu-Azzer district (Morocco). Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva 123, 64-68 (in Russian). |
