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Hetaerolite & Calcite

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BCK798788

Hetaerolite & Calcite

Steven Phillips collection
Type Locality

Description Tabs

Description
Locality: 
Sterling Mine, Antwerp, Jefferson County, New York, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.3 × 0.8 cm
Description

You are bidding on a small sample with a fracture surface that is lined with parallel growth calcite crystals and dotted with numerous small hetaerolite crystals. The highlight of the sample however is a cluster of very strange, "piggy-back" hetaerolite crystals that have grown into a chain formation. Very unusual and aesthetic micromount from the Steve Phillips collection of Franklin District rarities and oddities. 

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

Calcite

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

Seller Information

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