margaritasite
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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).
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
~1 min read
Encyclopedic overview
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.
Excerpted from Wikipedia’s “margaritasite” article, available under the CC BY-SA 4.0 licence.