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Manganocummingtonite

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GMN97130

Manganocummingtonite

Description Tabs

Description
Locality: 
Valea Untului, Cugir, Alba County, Romania
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 1.4 × 1.5 cm
Description

Rare manganese-silicate from Romania. The mineral forms pale brown fibrous elongated crystals . This specimen consists of a mass of manganocummingtonite.

Mineral Data
What's on the rock

Manganocummingtonite

Formula: 
☐{Mn2+2}{Mg5}(Si8O22)(OH)2
Strunz: 
9.DE.05
Crystal System: 
Monoclinic
Hardness: 
5.0 - 6.0
Colour: 
nd
Streak: 
nd
Type Locality: 
Tirodi Mine, Tirodi, Balaghat District, Madhya Pradesh, India

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