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27 points
POLYMORPHISMS is validvalid
POLYMORPHISM, [n]
POLYMORPHISM, the circumstance in which two minerals with different crystalline structures have identical chemical compositions, e.g. diamond and graphite [n]
POLYMORPHISM, [n]
POLYMORPHISM, the circumstance in which two minerals with different crystalline structures have identical chemical compositions, e.g. diamond and graphite [n]