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Groutite

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SCH29744

Groutite

Description Tabs

Description
Locality: 
Blackwater Mine, Yazzie Mesa, Apache County, Arizona, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
0.6 × 2.5 × 1.7 cm
Description

Black elongated crystals of groutite up to several mm (the largest is 4mm), scattered through quartz-replaced petrified wood. Hard to obtain!

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
schani

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