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Cobaltaustinite Talmessite Colbaltoan Picropharmacolite Spherocobaltite & Quartz

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FDW44649

Cobaltaustinite Talmessite Colbaltoan Picropharmacolite Spherocobaltite & Quartz

Description Tabs

Description
Locality: 
Aghbar Mine, Aghbar, Zagora Province, Drâa-Tafilalet Region, Morocco
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 4 cm
Description

This is a really fine specimen of cobaltaustinite. The matrix is covered in green needles of cobaltaustinite, on which talmessite crystals grow. You can see clearly that the talmessite crystals are zoned. Lapis jan.2002 writes about this zoning. The center of the crystals is cobalt-poor, where the borders are cobalt-rich talmessite and beta-roselite. I will send the buyer a copy of that article. Found by seller in december 2009. There are four pink micro spherocobaltite also on the specimen and some aggregates of white-pink colbaltoan picropharmacolite.

High resolution mineral images (tiff 75 MB), for use in articles or to print A3 for your wall, will be provided as download.

Mineral Data
What's on the rock

Cobaltaustinite

Formula: 
CaCo(AsO4)(OH)
Strunz: 
8.BH.35
Crystal System: 
Orthorhombic
Hardness: 
4.5
Type Locality: 
Dome Rock Copper Mine, Boolcoomatta Reserve (Boolcoomata Station; Boolcoomatta), Olary Province, South Australia, Australia

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

Colbaltoan Picropharmacolite

Variety Of: 

Picropharmacolite

Formula: 
Ca4Mg(AsO4)2(HAsO4)2·11H2O
Strunz: 
8.CH.15
Hardness: 
1.0 - 2.0

Spherocobaltite

Formula: 
CoCO3
Strunz: 
5.AB.05
Hardness: 
3.0 - 4.0
Type Locality: 
Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Quartz

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