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22 points
XENOCRYSTS is validvalid
XENOCRYST, a crystal not formed with its surrounding igneous rock [n]
XENOCRYST, a crystal or mineral grain which has been taken in by magma during its upward flow [n]
XENOCRYST, a crystal not formed with its surrounding igneous rock [n]
XENOCRYST, a crystal or mineral grain which has been taken in by magma during its upward flow [n]