Albrechtschraufite

Albrechtschraufite (IMA symbol: Asf[1]) is a very rare complex hydrated calcium and magnesium-bearing uranyl fluoride carbonate mineral with formula Ca4Mg(UO2)2(CO3)6F2·17H2O.[2][3][4] Its molar weight is 1,428.98 g, color yellow-green, streak white, density 2.6 g/cm3, Mohs hardness 2-3, and luster is vitreous (glassy). It is named after Albrecht Schrauf (1837–1897), Professor of Mineralogy, University of Vienna. Its type locality is Jáchymov, Jáchymov District, Krušné Hory Mountains, Karlovy Vary Region, Bohemia, Czech Republic.

Albrechtschraufite
General
CategoryMineral
Formula
(repeating unit)		Ca4Mg(UO2)2(CO3)6F2·17H2O
IMA symbolAsf
Identification
Formula mass1,428.98 g
ColorYellow green
FractureConchoidal
Mohs scale hardness2-3
LusterVitreous
Density2.6 g/cm3

See also

References
  1. Warr, L.N. (2021). "IMA-CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. Mindat
  3. Webmineral
  4. Handbook of Mineralogy


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