Fluorite is an important fluorine-containing mineral in nature, така се нарича още “флуорит”. A small number of fluorites are octahedrons and rhombic dodecahedrons, and some are twin crystals. Fluorite has glass luster, прозрачен до полупрозрачен, hardness is brittle and easy to break, colorless and transparent are rare, mostly blue, Зелено, лилаво, and white, но […]
