Evidence for Differences in Growth Rate Among Garnets in Pelitic Schists from Northern Sutherland, Scotland

C. A. Finlay and A. Kerr

Pollution Control Group, Department of Chemical Engineering, University of Natal, King George V Avenue, Durban 4001, South Africa
Department of Geology and Applied Geology, University of Natal, King George V Avenue, Durban 4001, South Africa

Abstract: MnO zoning profiles for various sizes of garnets from two pelitic schists were examined. The data from garnets of specimen A are consistent with a constant growth law, while the compositional-crystal size relationships of garnets from specimen B are best explained by heterogeneous growth rates.

Keywords: garnet • growth rate • pelitic schists • Sutherland • Scotland

Mineralogical Magazine; October 1987 v. 51; no. 62; p. 569-576; DOI: 10.1180/minmag.1987.051.362.11
© 1987, The Mineralogical Society
Mineralogical Society (www.minersoc.org)