Assertion: apatite's luster | /r/HasProperty | resinous
Facets:
Source sentences:
text: Its cleavage is incomplete; its luster is vitreous and resinous; its hardness on the mineralogical scale is 5; and its density ranges from 3,160 to 3,200 kg/m3 but reaches 3,800–4,200 kg/m3 in varieties enriched with strontium and the rare earths.