margaritasite
Sign in to saveMargaritasite is a yellow, caesium-bearing mineral in the carnotite group. Its chemical formula is (Cs, K, H3O)2(UO2)2V2O8·H2O and its crystal system is monoclinic (space group P21/a).
Key facts
- Mineral.name
- Margaritasite
- Mineral.category
- Carnotite group
- Mineral.formula
- (Cs, K, H3O)2(UO2)2V2O8·H2O
- Mineral.IMAsymbol
- Mgt
- Mineral.strunz
- 7/E.11-60
- Mineral.dana
- 40.2a.28.2
- Mineral.system
- Monoclinic
- Mineral.class
- 2/m – Prismatic
- Mineral.symmetry
- P21/a (no. 14)
- Mineral.unit cell
- a = 10.514(3) Å, b = 8.425(3) Å, c = 7.252(5) Å β = 106.01°
- Mineral.color
- Yellow
- Mineral.habit
- Tabular crystals, typically massive
- Mineral.diaphaneity
- Translucent
- Mineral.gravity
- 5.41
- Mineral.opticalprop
- Biaxial (−) α = [ 2.7
- Mineral.2V
- 45.5◦
- Mineral.other
- 25px Radioactive
via Wikipedia infobox
Article
3 sectionsContents
- Name and discovery
- See also
- References
Margaritasite is a yellow, caesium-bearing mineral in the carnotite group. Its chemical formula is (Cs, K, H3O)2(UO2)2V2O8·H2O and its crystal system is monoclinic (space group P21/a).
==Name and discovery== It was first described in 1982 from the Margaritas uranium deposit in the Peña Blanca district of the municipality of Aldama, in the Mexican state of Chihuahua.