znucalite
Sign in to saveAlso known as IMA1989-033
Znucalite or CaZn11(UO2)(CO3)3(OH)20·4(H2O) is a rare, radioactive, white to pale cream colored uranium-containing carbonate mineral, hydrated calcium zinc uranyl carbonate hydroxide. Znucalite crystallizes in the orthorhombic system, often forming aggregates or crusts, and is found as a rare secondary species in carbonate-hosted (meaning it is mined from carbonate containing formations such as limestone) polymetallic veins, and nearby oxidizing uranium veins; on dump material and coating mine walls, apparently of post-mine origin. It fluoresces yellow-green under UV light.
Wikidata facts
- Subclass of
- carbonate and nitrate class of minerals
- Named after
- calcium
- Image
- Znucalite - St Christoph, Bärenhecke, Erzgebirge, Saxony.JPG
Show 6 more facts
- Nickel-Strunz 9th edition (updated 2009)
- 5.ED.45
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 5.ED.45
- crystal system
- triclinic crystal system
- Commons category
- Znucalite
- IMA Mineral Symbol
- Znu
- chemical formula
- CaZn₁₁(UO₂)(CO₃)₃(OH)₂₀·4H₂O
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Encyclopedic overview
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- References
Znucalite or CaZn11(UO2)(CO3)3(OH)20·4(H2O) is a rare, radioactive, white to pale cream colored uranium-containing carbonate mineral, hydrated calcium zinc uranyl carbonate hydroxide. Znucalite crystallizes in the orthorhombic system, often forming aggregates or crusts, and is found as a rare secondary species in carbonate-hosted (meaning it is mined from carbonate containing formations such as limestone) polymetallic veins, and nearby oxidizing uranium veins; on dump material and coating mine walls, apparently of post-mine origin. It fluoresces yellow-green under UV light.
It was first described in 1989, after being discovered in Lill Mine, Černojamské deposit (Black pits deposit) in the Czech Republic. It was named in 1990 by Petr Ondruš, František Veselovský, and R. Rybka for its constituent elements.
Excerpted from Wikipedia’s “znucalite” article, available under the CC BY-SA 4.0 licence.