Assertion: meteorite's fusion crust | /r/HasProperty | black
Facets:
value: mostly
type: DEGREE
value: on most meteorites
type: LOCATION
Source sentences:
text: As it decelerates, eventually the molten surface layer solidifies into a thin fusion crust, which on most meteorites is black (on some achondrites, the fusion crust may be very light-colored).
text: The fusion crust is mostly still black, but some spots of brown are appearing with age.