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Sarkinite & Bementite

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SER785127

Sarkinite & Bementite

Description Tabs

Description
Locality: 
Gambatesa Mine, Reppia, Genova, Liguria, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 2.2 × 1.1 cm
Description

orange crystals of sarkinite with brown fibers of bementite

Mineral Data
What's on the rock

Sarkinite

Formula: 
Mn2+2(AsO4)(OH)
Strunz: 
8.BB.15
Hardness: 
4.0 - 5.0
Type Locality: 
Harstigen Mine, Pajsberg, Persberg district, Filipstad, Värmland, Sweden

Bementite

Formula: 
Mn7Si6O15(OH)8
Strunz: 
9.EE.05
Crystal System: 
Monoclinic
Hardness: 
6.0
Streak: 
White
Type Locality: 
Trotter Mine (Lehigh Mine), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA