Assertion: fossilized diatom | /r/HasProperty | mined for use
Facets:
value: in filters
type: LOCATION
value: in abrasives
type: OTHER
Source sentences:
text: Massive accumulations of diatom-rich sediments compact and solidify over long periods of time to form rock rich in fossilized diatoms that is mined for use in abrasives and filters.
text: Massive accumulations of diatom-rich sediments compact and solidify over long periods of time to form rock rich in fossilized diatoms that is mined for use in abrasives and filters.