Fluorite
Query URLs
https://term.museum-digital.de/md-de/tag/6724
- Note
- "Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon.
The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 4 as Fluorite.
Pure fluorite is transparent, both in visible and ultraviolet light, but impurities usually make it a colorful mineral 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 and mid-infrared ranges, where conventional glasses are too absorbent for use." - (en.wikipedia.org 01.03.2020)
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Grüner Fluorit
Fluorit ist ein sehr häufiges...
Object information
Image: Harzmuseum Wernigerode - CC BY-NC-SA -
Flussspat und Karbonate
Sekundäre Mineralisation in...
Object information
Image: Naturkunde-Museum Bielefeld (namu) - CC BY-NC-SA -
Flussspatkristall auf Quarz aus der Grube Clara in Oberwolfach
Diese Kristallstufe stammt...
Object information
Image: MiMa Museum für Mineralien und Mathematik - CC BY-NC-SA -
Fluorit
Der Fluorit ist das...
Object information
Image: Sammlungen der Universität Mainz - CC BY-NC-SA -
Laborflasche "Flußspat"
Die Laborflasche mit...
Object information
Image: Heimatmuseum Dohna - CC BY-NC-SA
References
Synonyms
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