98 



PHYSIOGRAPHT. 



Peridot Periklin. 



&c. It occurs in large spheroidal masses, which are not pebbles, mixed 

 with Bronzite in Trap tuff, at Kapfenstein in Lower Hungary, and at 

 Habichtswald in Hessia. It is contained also in the Meteoric Iron of Si- 

 beria, as well as in many meteoric stones that have fallen at different pe- 

 riods. 

 4. The transparent varieties are sometimes used as gems. 



PERIKLIN. Heterotomous Feld-Spar. MOMS. 

 Primary form. Doubly oblique prism. 



Fig. 331. 



P on M 



MonT 



T onP 

 Secondary form. 



- 93 19' 



- 120 18 



- 114 45 



T 



M 



M on I 



120 37' 



