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Jacobsite

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GMN115002

Jacobsite

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Description
Locality: 
Răzoare, Maramureș County, Romania
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.7 × 2.2 cm
Description

Black-brown jacobsite veinlets, and patches in carbonate matrix.
The veinlets consist of destorted crystals.

Mineral Data
What's on the rock

Jacobsite

Formula: 
Mn2+Fe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.5
Type Locality: 
Jakobsberg Mine, Nordmark (Nordmarksberg), Filipstad, Värmland, Sweden

Seller Information

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