UM1981-24-SiO:CaU
A material that is NOT an approved mineral species
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Formula:
~(Ca,K,Ba)U8Si2O21
Hardness:
5
One of four Ca-U4+ silicate species from Žirovsky Vrh deposit, Slovenia (and likely also from Forstau, Salzburg, Austria). Corresponds to "Group 1" microprobe analyses. The species occur as irregular to equant grains, black to gray to lighter gray in colour. Associated with coffinite. Compare UM1981-25-SiO:CaU, UM1981-26-SiO:CaU, UM1981-28-SiO:CaU and UM1982-17-SiO:CaTiU.
Compare arapovite - the only approved Ca- and U4+-bearing silicate mineral.
Compare arapovite - the only approved Ca- and U4+-bearing silicate mineral.
Unique Identifiers
Mindat ID:
47578
Long-form identifier:
mindat:1:1:47578:7
GUID
(UUID V4):
(UUID V4):
8b7b57b4-47a0-4ec0-b6fe-9f2c8435d66d
Physical Properties of UM1981-24-SiO:CaU
Hardness:
5 on Mohs scale
Chemical Properties of UM1981-24-SiO:CaU
Formula:
~(Ca,K,Ba)U8Si2O21
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 UM1981-24-SiO:CaU
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Simova, F.G. (1981): Uranium silicates from two deposits in Permian sediments, Central Europe. Bulgarska Akademia Nauk, Sofia, Doklady: 34(12): 1693-1696; in: Dunn, P.J., Grice, J.G., Fleischer, M., Pabst, A. (1983): New mineral names. American Mineralogist: 68: 1041
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 UM1981-24-SiO:CaU
mindat.org URL:
https://www.mindat.org/min-47578.html
Please feel free to link to this page.
Please feel free to link to this page.
Mineral Dealers:
Localities for UM1981-24-SiO:CaU
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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.
Austria | |
| Simova, F.G. (1981): Uranium silicates from two deposits in Permian sediments, Central Europe. Bulgarska Akademia Nauk, Sofia, Doklady: 34(12): 1693-1696; in: Dunn, P.J., Grice, J.G., Fleischer, M., Pabst, A. (1983): New mineral names. American Mineralogist: 68: 1041 |
Slovenia | |
| Simova, F.G. (1981): Uranium silicates from two deposits in Permian sediments, Central Europe. Bulgarska Akademia Nauk, Sofia, Doklady: 34(12): 1693-1696; in: Dunn, P.J., Grice, J.G., Fleischer, M., Pabst, A. (1983): New mineral names. American Mineralogist: 68: 1041 |
