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Jarosite & Willemite

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ASC658540

Jarosite & Willemite

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Description
Locality: 
Chah Khouni Mine, Anarak District, Nain County, Isfahan Province, Iran
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 3 cm
Description

beautiful crystallised brown jarosite with globes of transparent willemite. This specimen originally was mislabelled as iranite. But EDS analysis showed it to be jarosite. Analysis can be submitted if wanted.

Mineral Data
What's on the rock

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

Willemite

Formula: 
Zn2SiO4
Strunz: 
9.AA.05
Hardness: 
5.5
Streak: 
White
Type Locality: 
Vieille Montagne (Altenberg; Kelmisberg), Moresnet, Kelmis, Plombières-Vieille Montagne District (Plombières-Altenberg), Verviers, Liège Province, Belgium

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