ALUMINA. 
339 
Fig. 316. 
Fig. 317. 
Fig. 313. 
Fig. 319. 
Fig. 320. 
Saratoga County. Crystallized feldspar or adularia, asso¬ 
ciated with chrysoberyl, tourmaline, garnet, etc., is found in 
a vein of coarse granite passing through gneiss, in the town 
of Greenfield, about a mile north of Saratoga-Springs. It is 
white, translucent, and often has a coating of silvery mica. 
The forms observed at this locality are those represented in 
Fig. 307, and Figs. 320, 321, 322, and 323. P on x 128° 51b 
Fig. 322. 
Fig. 323. 
Suffolk County. At Cow bay, feldspar of an apple-green colour has been obtained in 
considerable quantities.* 
Warren County. Feldspar, affording large cleavages, of a white colour, is found in con¬ 
siderable abundance on the mountain about two miles west of the village of Caldwell. 
On French mountain, three miles south of the same village, there is a vein of feldspar or 
adularia, containing small quantities of magnetic iron ore, which has been somewhat worked. 
Pierce and Torrey. Cleaveland's Mineralogy. 
