3S 



°- FELSPAR GROUP— Continued. 



6'^ 



Labr ADORiTE. — cofitmued. 

 697 Massive. 



Loc, Labrador. 



698 

 1781 

 1782 

 699 



700 



701 



702 

 703 



704 



705 

 706 

 707 

 708 

 709 

 711 



Do. Imperfect water-worn crystals. 

 Loc, Labrador. 



Do. White, massive. 

 Loc. Norway. 



Oligoclase.- — White, massive. 

 Loc, Delaware. 



Obsidian. — Dark-brown, banded. 

 Loc, Lipari. 



Do. Black. 



Loc, Pantellaria. 



Do. Black, enclosing white crystals. 

 Loc, Vesuvius. 



Do. Black, very glassy. 



Do. Black lustrous " core," from which flakes have 



been struck. • 



Loc, Mexico (?) 



Pumice. — Greyish-white. 

 Loc, Lipari. 



PiTCHSTONE. — Dark-brown. 

 Loc, Cornwall. 



Do. Light-brown. 



Loc, Cornwall. 



Do. Greyish-brown. 



Loc, Cornwall. 



Spodumene. — Greenish-white, in granite, with Garnets. 

 Loc, Ireland. 



Do. Greenish-white, in granite, with Garnets. 

 Loc, Ireland. 



Petalite. — Rose colored and compact. 

 Loc, Utoe, Sweden. 

 Obs., presented by Mr. W. H. Paddon. 



