A. BROUWER. “Pienaarite, a melanocratic foyaite from Transvaal.’ 
A part of a large individual of felspar shows poikilitic relation to aegirme, 
titanite, nepheline (at the top to the left) and sodalite (at the lower edge, in the 
middle and to the right). 
The aegirine contains numerous idiomorphic inclusions of titanite, apatite and 
fluorspar 
Proceedings Royal Acad. Amsterdam. Vol. XII. 
