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Gypsum & Wulfenite Psm Anglesite

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PDM586576

Gypsum & Wulfenite Psm Anglesite

Pseudomorph

Description Tabs

Description
Locality: 
Mibladen, Drâa-Tafilalet Region, Morocco
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 2 × 0.8 cm
Description

From my own collection, this a rare replacement of gypsum after anglesite from the Mibladen mining area. The specimen is hollow, with thin tabular yellow-orange wulfenite crystals on the surface and inside the cavity. This is the only pseudomorph of this kind I know from this mining area.

Ex. Iván Blanco (ES) collection.

Mineral Data
What's on the rock

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.

Wulfenite

Formula: 
Pb(MoO4)
Strunz: 
7.GA.05
Crystal System: 
Tetragonal
Hardness: 
2.5 - 3.0
Streak: 
White
Type Locality: 
Bad Bleiberg, Bleiberg District, Gailtaler Alpen & Karnische Alpen, Carinthia, Austria

Anglesite

Formula: 
PbSO4
Strunz: 
7.AD.35
Crystal System: 
Orthorhombic
Hardness: 
2.5 - 3.0
Streak: 
Colorless
Type Locality: 
Parys Mountain Copper Mine, Anglesey, Wales, United Kingdom

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