176 



In Primary sandstone. In Syenites. 



Lowest (red) sandstone: Porphyries. 



rarely. Porphyritie pitchstone. 

 Greenstones. 



CARBONAT OF LIME. 



In Limestones : in both In Sandstones : in both 



classes. classes. 



Micaceous schist and Amygdaloids : 

 gneiss : rarely. imbedded. 



MICA. 



In Granite. In Limestone, primary ; 



Gneiss. rarely. 



Micaceous schist. Claystones and Green- 

 Quartz rock. stones : rarely. 



Sandstones : Syenite : rarely. 



occasionally. Porphyries, 

 Shale: occasionally. 



CHLORITE (FOLIATED.) 



In the Chlorite schists. In some actinolite 



Gneiss ; some anomalous schists. 



varieties. In some argillaceous 



Granite : in the same cir- schists. 



cumstances. 



TALC. 



In Talcose schist. In Serpentine, 



Primary limestone : Granite : rarely, 



rarely. 



