Crossword clues for fluorite
The Collaborative International Dictionary
Fluorite \Flu"or*ite\, n. (Min.) Calcium fluoride ( CaF2), a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called fluor spar, or simply fluor.
Wiktionary
n. A widely occurring mineral (calcium fluoride), of various colours, used as a flux in steelmaking, and in the manufacture of glass, enamels and hydrofluoric acid.
WordNet
Wikipedia
Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon.
Fluorite is a colorful mineral, both in visible and ultraviolet light, and the stone has ornamental and lapidary uses. Industrially, fluorite is used as a flux for smelting, and in the production of certain glasses and enamels. The purest grades of fluorite are a source of fluoride for hydrofluoric acid manufacture, which is the intermediate source of most fluorine-containing fine chemicals. Optically clear transparent fluorite lenses have low dispersion, so lenses made from it exhibit less chromatic aberration, making them valuable in microscopes and telescopes. Fluorite optics are also usable in the far-ultraviolet range, where conventional glasses are too absorbent for use.
Usage examples of "fluorite".
They were set up on a smooth, curving expanse of the outer surface, except for a massive fluorite camera.
However, Pennons is going around with the camera staff taking pictures with fluorite cameras, and we'll know for certain in a few hours.
Here was a cluster of quartz crystal points, the smallest of them as long as her arm and the largest taller than Tannim—there a polished boulder of amethyst big enough to crush the Mach I—ahead a single giant violet diamond‑shaped fluorite crystal balanced precisely on one point.
Here was a cluster of quartz crystal points, the smallest of them as long as her arm and the largest taller than Tannim—there a polished boulder of amethyst big enough to crush the Mach I—ahead a single giant violet diamond-shaped fluorite crystal balanced precisely on one point.
Tannim said softly, staring at the next rock, a milky yellow multifaceted crystal which balanced on a single point like the fluorite crystal now behind them.
Here was a cluster of quartz crystal points, the smallest of them as long as her arm and the largest taller than Tannimthere a polished boulder of amethyst big enough to crush the Mach Iahead a single giant violet diamond-shaped fluorite crystal balanced precisely on one point.
So from 2042 on, a major effort had been put into building automated factories, scattered all over the planet, to process the gases from local sources of carbon and sulphur and fluorite, and then release them into the atmosphere.