62 ROYAL SOCIETY OF CANADA 



If the norm of this rock be calculated it will be as follows 



Orthoclase 9.45 



Albite 56.59 



Anorthite 13.51 



Nepheline 11.93 



Corundum 4.45 



Calcite 1.98 



Magnetite .70 



Ilmenite .61 



Hematite .30 



Fosterite .21 



98.73 



Water 1.64 



100.37 



This gives the rock the following position in the quantitative clas- 

 sification : — 



Class I Persalane. 



Order VI Russare (near Tasraanare). 



Rang II Viezzenase. 



Sub-rang V Raglanose. 



This is a new type for which we propose the name Raglanose 

 (Raglanite). 



The mode or actual mineralogical composition of this rock, is some- 

 what different from the norm — the difference being represented chiefly 

 in the grouping of the feldspar molecules and in the modal presence of 

 micas. The rock is actually composed of oligoclase, nepheline, corundum 

 (4.45 per cent), with small amounts of muscovite, biotite, calcite, mag- 

 netite and apatite. 



White Alkali Syenite. 



This syenite consists essentially of plagioclasc and passes on one 

 hand into the nepheline syenite of the ordinary type, and on the other 

 hand into the reddish variety of alkali syenite. It may therefore be re- 

 garded as a rock of intermediate type marking a transition between the 

 two, although rather more closely related to the former. The con- 

 stituient minerals in character are identical with those present in the 

 nepheline syenite. Sodalite and cancnnite are absent. The plagio- 

 clase present, varies somewhat in character in different occurrences, al- 



