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Kidwellite & Bariopharmacosiderite

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MEX515186

Kidwellite & Bariopharmacosiderite

ex private collection

Description Tabs

Description
Locality: 
Les Montmins Mine, Échassières, Ébreuil, Allier, Auvergne-Rhône-Alpes, France
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 1.3 × 2.1 cm
Weight: 
27.00gr
Description

Light green, acicular balls of kidwellite together with green bariopharmacosiderite crystals.

Mineral Data
What's on the rock

Kidwellite

Formula: 
NaFe3+9(PO4)6(OH)11·3H2O
Strunz: 
8.DK.20
Hardness: 
3.0
Streak: 
yellow
Type Locality: 
Fodderstack Mountain, Norman, Montgomery Co., Arkansas, USA

Bariopharmacosiderite

Formula: 
Ba0.5Fe3+4(AsO4)3(OH)4·5H2O
Strunz: 
8.DK.10
Crystal System: 
Tetragonal
Hardness: 
2.5
Type Locality: 
Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
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