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Cobaltaustinite Picropharmacolite Spherocobaltite & Quartz

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FDW44650

Cobaltaustinite Picropharmacolite Spherocobaltite & Quartz

Description Tabs

Description
Locality: 
Aghbar Mine, Aghbar, Zagora Province, Drâa-Tafilalet Region, Morocco
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1 × 1 cm
Description

This looks like a small specimen, but it's a "giant" ;) The front side is covered with dark green needles of cobaltaustinite and some spherocobaltite ; and the back side is covered with spherocobaltite and picropharmacolite... But, although spherocobaltite is a rare species, I recommend you to buy this one for the cobaltaustinite. The dark green crystals are nicely transparent, and grow on quartz, which gives the crystals nice contrast.

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

Picropharmacolite

Formula: 
Ca4Mg(AsO4)2(HAsO4)2·11H2O
Strunz: 
8.CH.15
Crystal System: 
Monoclinic Needles and encrustations
Hardness: 
1.0 - 2.0
Streak: 
White
Type Locality: 
Ore dumps, Richelsdorf Smelter, Süss, Richelsdorf District, Hesse, Germany

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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