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Neotocite

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SHS96779

Neotocite

ex. Dr. Wilke (Eppertshausen/Germany)

Description Tabs

Description
Locality: 
Kokuriki Mine, Kitami City, Okhotsk Subprefecture, Hokkaidō Prefecture, Hokkaido Island, Japan
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.3 × 1.6 cm
Description

Neotocite in matrix

Mineral Data
What's on the rock

Neotocite

Formula: 
(Mn,Fe,Mg)SiO3·H2O
Strunz: 
9.ED.20
Crystal System: 
Amorphous
Hardness: 
3.0 - 4.0
Colour: 
Brown Bronze or Black
Streak: 
Dark brown to black
Type Locality: 
Erik Ers Mine, Torsåker, Hofors, Gästrikland, Sweden