Assertion: apatite | /r/UsedFor | refer to hydroxylapatite
Facets:
value: in the crystal
type: LOCATION
value: usually
type: TEMPORAL
Source sentences:
text: Apatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ions, respectively, in the crystal.