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Johninnesite

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GMN673037

Johninnesite

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Description
Locality: 
Schmorrasgrat-South, Ausserferrera, Ferrera Valley, Hinterrhein, Grisons, Switzerland
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.5 × 2 cm
Description

Brown, asbestiform aggregates on matrix. Rich specimen

Mineral Data
What's on the rock

Johninnesite

Formula: 
Na2Mn2+9Mg7(OH)8[AsO4]2[Si6O17]2
Strunz: 
9.DH.70
Hardness: 
5.0 - 6.0
Type Locality: 
Kombat Mine (Klein Otavi; Asis), Kombat, Grootfontein District, Otjozondjupa Region, Namibia

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