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Marcasite & Dolomite

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RSL721422

Marcasite & Dolomite

Description Tabs

Description
Locality: 
Cane Creek Quarry, Poplar Bluff, Butler County, Missouri, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 6.3 × 4 cm
Description

Aesthetic globular aggregates of marcasite, formed by small crystals, partially covered by brilliant, transaprent to translucent dolomite crystals. From an American locality not well represented in collections.

Mineral Data
What's on the rock

Marcasite

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

Dolomite

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