Assertion: mineral | /r/HasAspect | metallic luster
Facets:
value: always
type: TEMPORAL
Source sentences:
text: The mineral always has a brass-yellow color, a metallic luster and a high specific gravity.
text: Minerals such as quartz have a non-metallic luster.
text: Minerals that are opaque and shiny, such as pyrite, have a metallic luster.
text: It is often useful to first determine if a mineral has a metallic luster.
text: A mineral that reflects light the way glass does has a vitreous (or glassy) luster; a mineral that reflects light like chrome has a metallic luster.