The Flow
From Wikipedia :
The word fluorite is derived from the Latin verb fluere, meaning to flow. The mineral is used as a flux in iron smelting to decrease the viscosity of slag. The term flux comes from the Latin adjective fluxus, meaning flowing, loose, slack. The mineral fluorite, originally termed fluorspar, was first printed in a 1530 work Bermannvs sive de re metallica dialogus by Georgius Agricola, as a mineral noted for its usefulness as a flux.
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