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Rösslerite & Jarosite

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RHT811854

Rösslerite & Jarosite

Rare Mineral

Description Tabs

Description
Locality: 
Schlema-Hartenstein, Erzgebirge, Saxony, Germany
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.1 × 2 cm
Weight: 
12.00gr
Description

Tufts of lath-shaped colorless rößlerite crystals on matrix with very glossy brown botryoidal jarosite (visual ID).

Mineral Data
What's on the rock

Rösslerite

Formula: 
Mg(HAsO4)·7H2O
Strunz: 
8.CE.20
Crystal System: 
Monoclinic Fibrous crusts
Hardness: 
2.0 - 3.0
Streak: 
White
Type Locality: 
"Im Lochborn" Copper mine, Bieber, Gelnhausen, Spessart, Hesse, Germany...

Jarosite

Formula: 
KFe3+ 3(SO4)2(OH)6
Strunz: 
7.BC.10
Crystal System: 
Trigonal - Pyramidal Class
Hardness: 
2.5 - 3.5
Type Locality: 
Jaroso Ravine, Sierra Almagrera, Cuevas del Almanzora (Cuevas de Vera), Almería, Andalusia, Spain