POLYMORPHISM is validvalid

the circumstance in which two minerals with different crystalline structures have identical chemical compositions, e.g. diamond and graphite

173,001 of 196,601 in NWL2023·also valid in CSW24

the circumstance in which two minerals with different crystalline structures have identical chemical compositions, e.g. diamond and graphite

184,767 of 280,887 in CSW24·also valid in NWL2023

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