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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