Assertion: apatite's use | /r/HasProperty | iv
Facets:
Source sentences:
text: 17 Representative images of the experimental crucibles after use showing a a slag (i) with a silicon-based metal phase (ii), and a coating of white powder (>96% SiO 2 ) (iii); b detail of a section showing the slag (i) and the metal phase (ii); c a small amount of condensate on the crucible lid after use (iv), and no damage to the crucible bottom which cracked first after cooling (v) (Color figure online)