Fluorite on quartz l'Avellan (299)

Fluorite on quartz from the Avellan mine in Fréjus, Var, France.

Dimensions of stone: L: 63mm x W: 37mm x H: 62mm x weight with base: 135g.

Chemical formula: CaF2 (calcium fluoride). Hardness: 4 on the Mohs scale. Density 3.18 (Weighs 3.18 times its equivalent volume of water). Colour: grey-green.

This item is fixed with a flexible mastic (easily removable) on a bevelled acrylic base.

Cleaning fluorite: lukewarm water, soapy water, brush or soft bristle brush. 

Identification: can be scratched with a knife, reacts to acid test (HCl).

See our article on fluorite.