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Graphite On Quartz

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PDM792347

Graphite On Quartz

Description Tabs

Description
Locality: 
Essex County, New York, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 3.9 × 3.3 cm
Description

Uncommon locality specimen of platy graphite flakes on quartz matrix from the oldest graphite mining area in the USA (XIX Century).

Old material the collection of Philippe Virlet.

Mineral Data
What's on the rock

Graphite

Formula: 
C
Strunz: 
1.CB.05a
Crystal System: 
Hexagonal
Hardness: 
1.0 - 2.0

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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