fluorite

How To Use fluorite In A Sentence

• The fluorite tends to occur only as cubes modified by the dodecahedron, with simple cubes or octahedra uncommon or absent.
• Crystals of calcium fluoride (CaF2), also known as fluorite and fluorspar, are used to make lenses to focus infrared light. CreationWiki - Recent changes [en]
• A greisen is a quartz - mica aggregate containing significant amounts of cassiterite, wolframite, fluorite, topaz, rutile, and tourmaline.
• The only known igneous rocks in the area are Permian periodotite and lamprophyre dikes as well as diatremes of ultramafic composition associated with the Fluorite district.
• In contrast with the well-known, somewhat similar mine at Panasqueira, Portugal, it is remarkable that at Yaogangxian fluorite is very common, and apatite is rather rare.
• Most specimens are on a typical brown goethite matrix and may have associated calcite, plattnerite, barite, fluorite, and hemimorphite.
• Coexisting MI phases in these rocks include garnet, plagioclase, quartz, tourmaline and fluorite.
• In the western United States many metalliferous deposits carry large amounts of fluorite, which is treated as a gangue or waste mineral, but which could be profitably extracted if there were local markets. The Economic Aspect of Geology
• The Yaogangxian mine is a world-class locality for not only fluorite but also for arsenopyrite, bournonite, stannite, wurtzite, and ferberite.
• One quick stop was made at the abandoned New First of May mine, where on the ore pile we found galena, pyrite, arsenopyrite, and fluorite.