fluorite
[floo r-ahyt, flawr-, flohr-]
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noun
a common mineral, calcium fluoride, CaF2, occurring in green, blue, purple, yellow, or colorless crystals, usually in cubes: the principal source of fluorine, used also as a flux in metallurgy and for ornament.
Origin of fluorite
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Examples from the Web for fluorite
Historical Examples of fluorite
Only certain varieties of fluorite show the phenomenon well.
The Nature of Animal LightE. Newton Harvey
Some specimens of fluorite (CaF2) show the phenomenon especially well, whence the name fluorescence.
The Nature of Animal LightE. Newton Harvey
Agricola derived the name fluores from fluo "to flow," and we in turn obtain "fluorite," or "fluorspar," from Agricola.
De Re MetallicaGeorgius Agricola
Rays passing through the fluorite window strike the blackened side of the mica, which is parallel and opposite to it.
Inventors at WorkGeorge Iles
In England, fluorite is obtained in this manner as a by-product from lead and zinc mines.
The Economic Aspect of GeologyC. K. Leith
fluorite
noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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fluorite
[flur′īt′]
The American Heritage® Science Dictionary
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