Assertion: natural end member andradite | /r/MadeOf | small amount of mn
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Source sentences:
text: (1993) analyzed the nature of the magnons and magnetic exchange interactions in a natural nearly end-member andradite containing a small amount of Mn 2+ and Al 3+ , as well as in isostructural synthetic Ca 3 Fe 2 3 + Ge 3 O 12 , from inelastic neutron scattering measurements made at 4.2 K.