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Dolomite

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CR560755

Dolomite

Classic Locality

Description Tabs

Description
Locality: 
Black Rock, Lawrence County, Arkansas, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 4.8 × 4 cm
Description

Arkansas classic: pinkish saddle shaped rhombohedrons of dolomite on dolo/limestone matrix with few sulfide crystals (chalcopyrite) on top.

Very attractive specimen with no damage.

Mineral Data
What's on the rock

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White