Assertion: fluoride | /r/AtLocation | the earth's crust
Facets:
value: as fluorspar(caf 2
type: OTHER
value: as apatite(ca
type: TEMPORAL
value: as cryolite
type: MANNER
value: as rock phosphate
type: MANNER
value: as 5
type: TEMPORAL
value: as hornblende
type: MANNER
value: as mica
type: LOCATION
value: typically
type: DEGREE
value: fairly abundantly
type: DEGREE
Source sentences:
text: Fluoride exists fairly abundantly in the earth's crust and can enter groundwater by natural processes; the soil at the foot of mountains is particularly likely to be high in fluoride from the weathering and leaching of bedrock with a high fluoride content.
text: This fluoride typically occurs in the earths crusts as fluorspar(CaF 2 ), rock phosphate, cryolite (Na 3 AlF 6 ), apatite(Ca 5 (PO 4 ) 3 F), mica, and hornblende.