BEAUTIFUL FLUORITE WITH CALCITE CRYSTALS FROM PAPIOL, BARCELONA (CURRENTLY CLOSED MINE). VERY NICE PIECE ON ITS COMPLETE MATRIX OF OCTOEDRIC FLUORITE CRYSTALS ON SAMPLES OF CALCITE.
Fluorite is a group III mineral (halides) that, according to Strunz's classification, formed the elements calcium and fluorine.
Its structure belongs to the cubic system, and it has a cubic, octahedral and dodecahedral rhomboid habit.
Fluorite exhibits thermoluminescence and fluorescence physical properties.
In industry, it is mainly used in the metallurgy of iron and steel. It is used as a source of fluorine and hydrofluoric acid, also in the glazing of ceramics and in the manufacture of optical glasses.
The beauty of the specimens makes it a highly appreciated mineral by museums and private collectors.
