Assertion: mineral | /r/HasProperty | noted for its usefulness
Facets:
value: as a flux
type: MANNER
Source sentences:
text: The mineral fluorite was originally termed fluorospar and was first discussed in print in a 1530 work Bermannvs sive de re metallica dialogus [Bermannus; or a dialogue about the nature of metals], by Georgius Agricola, as a mineral noted for its usefulness as a flux.