Browsing Archive: June, 2011

Mineral of the Month - Analcime

Posted by Site Moderator Webmaster on Friday, June 24, 2011, In : Mineral of the Month

Goboboseb crystals showing crystal clear analcime – photos and specimens PdB

NaAlSi2O6-H2O, Hydrated Sodium Aluminium Silicate

The name of the mineral comes from the Greek word analkis that means weak.

Analcime is a zeolite and occurs frequently in basalts and other basic igneous rocks associated with other Zeolites.

Crystal system: triclinic (Pseudo-cubic)

The aluminosilicate framework of the crystal structure does not change in topology at all. The reduction...

Posted by Site Moderator Webmaster on Friday, June 24, 2011, In : Mineral of the Month

Crystal system: Isometric Hardness: 3,5 - 4,0

Density: 6,15 average Streak: Red

Colour: Red to a deep red that can appear almost black.

Cleavage: Is fair in four directions forming octahedrons.

Occurrence: Oxidized zone of co...