Single-crystal IR spectroscopy of pyrope-almandine garnets with minor amounts of Mn and Ca Hofmeister, A. M. ; Fagan, T. J. ; Campbell, K. M. ; Schaal, R. B. Abstract Publication: American Mineralogist Pub Date: April 1996 DOI: 10.2138/am-1996-3-416 Bibcode: 1996AmMin..81..418H