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Groutite

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TRM870042

Groutite

Description Tabs

Description
Locality: 
Bülten-Adenstedt Mine, Ilsede, Peine District, Lower Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 3 × 1 cm
Description

Very good Groutite crystals from Emilie Mine.

Mineral Data
What's on the rock

Groutite

Formula: 
Mn3+O(OH)
Strunz: 
4.FD.10
Hardness: 
3.5 - 4.0
Type Locality: 
Sagamore Mangan No. 2 pit, Ironton, Cuyuna North Range, Crow Wing Co., Minnesota, USA

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