Analcime


Synonyms:  Analcidite, Analcine, Analcite, Cubicite, Cubizite, Cuboite, Eudnophite, Euthalite, Five Islans Garnet
Classification:  Silicates, Tektosilicates, Zeolite Group
Chemical formula:  Na(Si2Al)O6·H2
Crystal system:  Isometric also orthorhombic, upon MINDAT triclinic, tetragonal or even monoclinic
Density (g/cm3):  2,24 - 2,29 measured, 2,271 calculated
Tenacity:  Brittle
Cleavage:  Poor/indistinct on {100}
Fracture:  Sub-conchoidal
Hardness (Mohs):  5 - 5,5
Colour:  White, colourless, gray, pink, greenish, yellowish
Lustre:  Vitreous
Streak:  White
Transparency:  Transparent, translucent
Type locality:  Cyclopean Islands, Acitrezza, Etna Volcanic Complex, Catania Province, Sicily, Italy

 

 


 

 
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