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Haiweeite & Uranophane-β

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CHP846303

Haiweeite & Uranophane-β

Classic Locality

Description Tabs

Description
Locality: 
Perus, São Paulo, Sao Paulo, Brazil
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 3.3 × 1.7 cm
Description

specimen with some very nice tufts of yellow needles of haiweeite with associate some yellow prismatic crystal of beta-uranophane on matrix.

c. 1975

Mineral Data
What's on the rock

Haiweeite

Formula: 
Ca(UO2)2[Si5O12(OH)2]·6H2O
Strunz: 
9.AK.25
Crystal System: 
Orthorhombic
Hardness: 
3.5
Streak: 
White
Type Locality: 
Unnamed U occurrence [1], Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA

Uranophane-β

Formula: 
Ca(UO2)2(HSiO4)2·5H2O
Strunz: 
9.AK.15
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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