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Talmessite & Goethite

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BCK738847

Talmessite & Goethite

Eric Asselborn collection
Classic Locality

Description Tabs

Description
Locality: 
Aghbar Mine, Aghbar, Zagora Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.8 × 3.7 × 1.9 cm
Description

You are bidding on a wonderful miniature sample with large clusters of talmessite crystals on quartz from the Eric Asselborn collection. The talmessite crystals grade from green to light pink at the terminations lending the brown coloration. The quartz crystals on which the talmessite have grown have beautiful inclusions of hematite and sprays of goethite. Lots to look at here under magnification and an exceptional specimen of early Bou Azzer collecting. 

Mineral Data
What's on the rock

Talmessite

Formula: 
Ca2Mg(AsO4)2·2H2O
Strunz: 
8.CG.05
Crystal System: 
Triclinic
Hardness: 
5.0
Type Locality: 
Talmessi Mine (Talmesi Mine; Telmessi Mine; Telmesi Mine), Anarak District, Nain County (Nayin County), Esfahan Province (Isfahan Province; Aspadana Province), Iran

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

Seller Information

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