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Pyrolusite & Goethite

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RSL1079133

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Description
Locality: 
Sagides, Arcos de Jalón, Soria, Castile & León, Spain
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4 × 2.5 cm
Description

Pyrolusite specimens from Sagides (Soria) are rare on the market. In this specimen we can see bright aggregates of fine prismatic pyrolusite crystals. They are partially covering a goethite matrix.
Col. Joan Astor (Barcelona).

Collected: 
1975
Mineral Data
What's on the rock

Pyrolusite

Formula: 
MnO2
Strunz: 
4.DB.05
Hardness: 
2.0 - 6.5

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany
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