Rubellite crystals from the Jonas Mine.
Images courtesy of Rob Lavinsky, Irocks.com
Raman analysis of the rubellite from the Jonas Mine reported on page 315 of Wilson (2012) indicated that one small crystal was rossmanite. No further information is available..
References:
Wilson WE (2012) Famous mineral localities: the Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43, 289-317.
last updated: 19-Apr-2014