| Felspars contain a large proportion of alkalis and it
rcould be very useful ~f tMs al!cali could be recovered by some
easy method. Present invest(qation.~ faileil to support, however,
that fusion offelsparrmd nepheline .~yenite toith Fe 2 0 3 or GaO
co•tld liberate any allcali from it after extraction with water. |