Fluorite is a mineral composed of calcium fluoride (CaF2), επίσης γνωστό ως “fluorite”, which contains many impurities. The crystals are mostly cubes or octahedrons, and the aggregates are clusters or blocks. The pure ones are transparent and colorless, and the ones with impurities are often green, μπλε, purple, rose red and other colors. Appears glass […]
