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Znucalite & Gypsum

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CZM528803

Znucalite & Gypsum

Radioactive

Description Tabs

Description
Locality: 
Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 0.4 × 0.3 cm
Description

Rich, small specimen containing unusually well-crystalline rare znucalite from the classic locality. Confirmed by single-crystal X-ray diffraction.

Mineral Data
What's on the rock

Znucalite

Formula: 
Zn12Ca(UO2)(CO3)3(OH)22·4H2O
Strunz: 
5.ED.45
Hardness: 
0.0
Type Locality: 
Lill Mine, Černojamské deposit (Black pits deposit), Březové Hory ore region (Birkenberg), Příbram, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.

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