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Ferri-ghoseite

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HEF636315

Ferri-ghoseite

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Description
Locality: 
Varenche Mine, Saint-Barthélemy, Nus, Aosta Valley, Italy
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.4 × 1.6 cm
Description

Yellowish-brown fibrous crystals of rare ferri-ghoseite on matrix.

Named after Dr Subrata Ghose (1932-2015), Mineral Physics
Professor at the University of Washington, Seattle, and promoter of girls' education in India.

Mineral Data
What's on the rock

Ferri-ghoseite

Formula: 
☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
Strunz: 
9.DE.20
Hardness: 
6.5 - 0.0
Streak: 
white
Type Locality: 
Tirodi Mine, Tirodi, Balaghat District, Madhya Pradesh, India

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