VOL. II. PLATE XXII. 



FIG. 118. Rhombohedral Emerald-malachite. 



R + 1. P + QD. 



r s 



FIG. 119. Rhombohedral Euchlore-mica. 



R QD. R. 



o R 



FIG. 120. Rhombohedral Kouphone-spar. 

 R 1. R. R + 1. 



n P r 



FIG. 121. Rhombohedral Corundum. 



R - oo. R. P + 1. P + oo. 



o P r s 



FIG. 122. Rhombohedral Corundum. 



P + 1. R + 1. P + 2. P + 00. 



r a b s 



FIG. 123. Rhombohedral Corundum. 



R_oo. JP+1. fP + 3, P + 3. 

 o c I e 



P +00. 



s 



