114 Geology of Deerjield, ^'tJ. 



5cfto)'Z— the black variety occurs in Pelhani, Shutesbufy, 

 and Orange, Mass., and in Brattleborough, Vermont. 



Epidote — in Deerfield, Shutesbury, Leyden, and Pelham, 

 and in Athol, Worcester county. The specimens poor. 



Tremolite — in the west part of Leyden, near Green river. 

 The rock in this region is chiefly mica slate, and the 

 quantity of tremolite is very great. Tons of it might be 

 easily collected. 



€yanite, or Sappare— in Deerfield, in mica slate ; disco- 

 A^ered by Dr. S. W. Williams. 



Actynolite — rare, found in Shutesbury. 



Serpentine — found in Leyden in rolled masses. Some of the 

 specimens admit a fine polish, and the ground is hand- 

 somely variegated. It has not been noticed in situ. 



Asbestus — compact, in Pelham. 



Garnets — very plenty in Conway, Deerfield, Shelburne, kc. 

 Good specimens of the melanite occur in Conway. 



Native Mum — ^in Leyden, in small quantities, efflorescing on 

 argillaceous slate. 



Sulphur — in Conway, Shelburne, and Warwick, efflorescing, 

 on mica slate. 



Prehnite — in greenstone, Deerfield, encrusting the columns 

 and in radiated masses, but rarely crystallized. The 

 veins of it, when in place, are nearly perpendicular. 



Zeolite — in same place, not abundant. Some good speci- 

 mens of the radiated variety are found. 



dhabasie — in same place, considerably abundant. No crystals 

 have yet been found whose sides exceed a quarter of ah 

 inch. It occurs in the veins of the greenstone, in geodes, 

 on balls of zeolite, on chalcedony, on lamellar quartz, &c. 



Stilbite — in same place, not abundant. It is commonly asso- 

 ciated with chabasie, and the crystals, though small, are 

 well defined. 



Analcime — in same place, very abundant, and is associated 

 with quartz and amethyst, which are sometimes enclosed 

 by analcime. It generally occurs in cylindrical, reniform, 

 and radiated masses. A few perfect crystals only have 

 been observed* 



