Fluorite is an important fluorine-containing mineral in nature, έτσι λέγεται και “φθορίτης”. A small number of fluorites are octahedrons and rhombic dodecahedrons, and some are twin crystals. Fluorite has glass luster, διαφανές έως ημιδιαφανές, hardness is brittle and easy to break, colorless and transparent are rare, mostly blue, πράσινος, μωβ, and white, αλλά […]
