Assertion: mineral | /r/HasAspect | same chemical composition
Facets:
value: in some cases
type: TEMPORAL
Source sentences:
text: In some cases, two minerals have the same chemical composition but different crystal structures.
text: If two minerals (as in the two polymorphs of carbon, namely graphite and diamond) have the same chemical composition, the difference in specific gravity reflects variation in internal packing of the atoms or ions (diamond, with a G of 3.51, has a more densely packed structure than graphite, with a G of 2.23).
text: In some cases, two minerals have the same chemical composition but different crystal structures.