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Picropharmacolite Pharmacolite Sainfeldite & Erythrite

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RSL721407

Picropharmacolite Pharmacolite Sainfeldite & Erythrite

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Description Tabs

Description
Locality: 
Bou Azzer Mine, Amerzgane, Ouarzazate Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 5.5 × 3 cm
Description

Very rich specimen formed by several white (transparent) acicular crystals of picropharmacolite, accompanied by pinkish erythrite and pharmacolite and radiated prismatic white crystals of sainfeldite. On a nickelskutterudite matrix. I collected these specimens in Bou Azer mine in february 2018. Under the loupe are incredible!

Mineral Data
What's on the rock

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

Pharmacolite

Formula: 
Ca(HAsO4)·2H2O
Strunz: 
8.CJ.50
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Sophia Mine, Böckelsbach valley, Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany

Sainfeldite

Formula: 
CaCa2Ca2(AsO4)2(HAsO4)2·4H2O
Strunz: 
8.CB.10
Crystal System: 
Monoclinic
Hardness: 
4.0
Streak: 
White
Type Locality: 
Gabe Gottes Mine (incl. Giftgrube), Neuenberg, Ste Marie-aux-Mines (Markirch), Haut-Rhin, Alsace, France

Erythrite

Formula: 
Co3(AsO4)2·8H2O
Strunz: 
8.CE.40
Hardness: 
1.5 - 2.5
Type Locality: 
Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany