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Goethite & Quartz

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MGR738291

Goethite & Quartz

Description Tabs

Description
Locality: 
San Valentín Quarry, Sancti Spiritu, La Unión, Murcia, Spain
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.4 × 4.6 × 4.3 cm
Description

Brightly irridescent geothite covered sharp terminated quartz crystals. An excellet specimen for the locality and much more rare than material from Filon Sur (which is not on Quartz). The colors are magnificent - from blue, purple and red to green and yellow and countless steps of all these colors! A pleasure to look at it and rich of amazing detaisl. No significant damages to report.

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