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Hetaerolite

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SMM589706

Hetaerolite

Description Tabs

Description
Locality: 
Mount Argentiera Mine, Calabona, Sassari Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1 × 0.5 cm
Description

All the little holes in this small sample are covered with blacks bipyramidal shining microcrystals so bright that it is really difficult for me to photograph them.

Boxed with Label
Mineral Data
What's on the rock

Hetaerolite

Formula: 
ZnMn2O4
Strunz: 
4.BB.10
Hardness: 
6.0
Colour: 
Black
Type Locality: 
Passaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

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