34 



i Ol in i.i 





\i'.U.t" 



I ' 



- 



Vivianite . 



| Sphene . 

 Asphalt . 

 Naphtha . 

 Anthracite 



II. 



Abundant in some metamorphic regions, 

 both in layers and in veins ; an essen- 

 tial constituent of many c rystallme 

 rocks, as varieties of granite, d 

 > ise, gabbro, and dolcrite. 



> a veinstone in some i 

 lifenms districts. 



II. In veins associated with metallic ores; 

 also as a blue earth in bogs and other 

 places where animal remains have 

 decayed, and as a peach -bloom on 

 sonu- ichthyolites. 



I. Abundant in some granites, syenites, 

 gneisses, schists, and metamorphic 

 limestones. 



II. Occasionally disseminated in grains or 

 filling veins and cavities of sandstone 

 or other rocks. 



II. Occasionally in cavities of rocks, or 

 coming to the surface cither alone or 

 with spring water. 



I. In beds, like ordinary coal. 

 II. In cavities of rocks, particularly in 

 association with intrusive igneous 

 masses ; also diffused in minute- 

 grains, giving a black, coally aspect 

 to some rocks. 



