Assertion: mineral | /r/HasProperty | identified
Facets:
value: by comparing its hardness
type: MANNER
Source sentences:
text: Minerals are identified and described according to their physical properties of:
text: Recall that a mineral is defined as naturally occurring.
text: Minerals can be described as brittle, ductile, malleable, sectile, flexible, or elastic.
text: A mineral can be identified by comparing its hardness to the hardness of these 10 minerals.