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mig·ma·tite  (mĭgmə-tīt′)
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Tweet n. A rock of both metamorphic and igneous origin that exhibits characteristics of both rock types and probably forms through the heating but not melting of rocks in the presence of abundant fluids. [Greek migma, migmat-, mixture (from mignunai, to mix; see meik- in the Appendix of Indo-European roots) + -ITE1.] |
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