ANALYSES OF MINERALS, 



Soaprock from Cornwall. 



Silex... 45 



Magnesia.. ... 2475 



Alumiue 9*25 



Oxide of iron 1 



Potash ..... <)75 



Water 18 



98-75 



Axinite. 



Silex..,.,. 50-50 



Lime ..- 17 



Alumine 16 



Oxide of iron 9-50 



manganese 5-25 



Potash 0-25 



98-5 



Gray semiopal from Moravia. 



Silex...... 85 



Alumine 3 



Oxide of iron........'. 1-75 



Charcoal 1 



Water, a little ammoniacal 8 



Bituminous oil 0-33 



99-08 

 JBronzite *. 



Silex........ 60 



Magnesia..... 27*5 



Oxide of iron... ,. 10-5 



Water ., 0:5 



98-5 



381 



AxiniU 



Cray semiopal. 



JBioazite. 



See Journal, vol. xxv, p. 381. 



Hjperstene 



