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Okenite
Silicate group
Formule chimique :
CaSi2O4(OH)2.H2O
Système cristallin :
Triclinic
Etymologie :
By the German naturalist L. Oken.
Dureté :
4.5 – 5
Densité :
2.3
Propriétés physiques :
Glassy sheen, and pearly on cleavage. Colourless to white. Transparent to translucent. Irregular fracture. Perfect cleavage (010).
Propriétés chimiques :
Attacked by hydrochloric acid (HCL) with formation of a gel.
Formule chimique :
CaSi2O4(OH)2.H2O
Habitus :
In radiating fibrous clusters with very fine acicular crystals on the surface.
Gîtologie :
In radiating fibrous clusters with very fine acicular crystals on the surface.
Determination :
Easy because of its tightly packed, spiky ball habitus.
Utilisation :
No major use
Okenite is found in basalt tonsils in the Faroe Islands, Disco Island (Greenland) and Chile. It is possible to find beautiful samples from the Syhadree mountains (India).
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