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Calcite & Marcasite

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NST692600

Calcite & Marcasite

Description Tabs

Description
Locality: 
Brushy Creek Mine, Greeley, Reynolds County, Missouri, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 6 × 2.8 cm
Largest Crystal: 
3.00cm
Description

A fine small cabinet of typical Marcasite-coated Calcites from Brushy Creek Mine.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Marcasite

Formula: 
FeS2
Strunz: 
2.EB.10a
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5