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Quartz

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RPL643012

Quartz

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Description
Locality: 
Gunheath Pit, St Austell, Cornwall, United Kingdom
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.5 × 8 × 5 cm
Largest Crystal: 
2.00cm
Weight: 
270.00gr
Description

A group of light grey quartz crystals with a good lustre on a granite matrix. Most crystals show numerous growth stages and have secondary tiny points at their base, a couple are sceptred. There is some minor iron staining and kaolinite present adding contrast. Only minor damage to edges.  

Mineral Data
What's on the rock

Quartz

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

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