Specimens from Morocco

The flat cavity in the matrix is covered in green needles of cobaltaustinite, on which talmessite crystals grow. The zone 
with cobaltaustinite is ca. 2,5 x 1,0 cm large. 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. For more info, see an article we wrote about this locality here... and see Mindat. I can supply the Lapis article on demand.  

Aghbar open pit, Bou Azzer, Morocco

(Found in december 2009)

4.5 x 3.0 x 2.8 cm