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Goethite & Quartz

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RPL589633

Goethite & Quartz

Classic Locality

Description Tabs

Description
Locality: 
Royal Restormel Mine, Lostwithiel, Cornwall, United Kingdom
Class: 
Massive/Crystalline
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 8 × 5 cm
Largest Crystal: 
1.30cm
Weight: 
750.00gr
Description

A large, rich and heavy specimen of goethite which displays on five faces. The goethite has formed as bands of dark golden brown concentric rings and in a few areas as botryoidal spheres with an iridescent sheen. There is one cavity lined with clear quartz.

There is no damage and the specimen displays well.

 

Previous labels supplied (not photographed)
Mineral Data
What's on the rock

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

Quartz

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

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