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Goethite

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ATM1081773

Description Tabs

Description
Locality: 
Royal Restormel Mine, Lostwithiel, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.87 × 4.6 × 4.05 cm
Largest Crystal: 
2.87cm
Description

Large Goethite Botryoidal nodule filling cavity in matrix.

Dull lustre to this Botryoidal nodule.  Unusual from this classic Lostwithiel loccation.

Ex my personal collection  X-546

 

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

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