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Marécottite & Plavnoite

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CHP1174090

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Description
Locality: 
Plavno Mine, Krušné Hory Mountains, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 1.9 × 1.1 cm
Description

specimen with some beautiful crystalline aggregates of brownish-yellow marecottite with orange plavnoite on matrix.

c. B853 

Mineral Data
What's on the rock

Marécottite

Formula: 
Mg3(UO2)8(SO4)4O6(OH)2·28H2O
Strunz: 
7.EC.15
Crystal System: 
Triclinic
Hardness: 
3.0 - 0.0
Streak: 
colorless
Type Locality: 
La Creusa U prospect (La Creusaz U prospect), Les Marécottes, Le Trient Valley, Wallis (Valais), Switzerland

Plavnoite

Formula: 
K0.8Mn0.6[(UO2)2O2(SO4)]·3.5H2O
Group Parent: 
Zippeite Group
Crystal System: 
Monoclinic
Type Locality: 
Plavno mine, Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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60
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Start 28 Mar 18:00
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