114 Geology of Deerfield, Se. 
‘Schorl—the black variety occurs in Pelham, Shutesbury, 
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 rivet. 
The rock in this region is chiefly mica slate, and the 
quantity of tremolite is very great. Tons of it might be 
easily collected. 
Cyanite, or Sappare—in Deerfield, in mica slate ; discover 
ed by Dr. S. W. Williams. 
Actynolite—rare, found in Shutesbury. 
Serpentine—found in Leyden in rolled masses. Some of the 
specimens adinit a fine polish, and the ground is band- 
somely variegated. It has not been noticed in sift. 
Asbestus—compact, in Pelham. 
Garnets—very plenty in Conway Deerfield, Shelburne, &- 
Good specimens of the melanite occur in Conway. 
Native Alum—in Leyden, in small quantities, efflorescing 0 
argillaceous slate. 
Sulphur—in Conway, Shelburne, and Warwick, efflorescing 
on mica slate, 
Prehnite—in greenstone, Deerfield, incrusting the columns 
and in radiated masses, but rarely crystallized. The veils 
of it, when in place, are nearly perpendicular. : 
_ Zeolite—in same place, not abundant. Some good spe 
mens of the radiated variety are found. 
Chabasie—in same place, considerably abundant. ‘No cry® 
tals have yet been found whose sides exceed a quarter of at 
inch. It occurs in the veins of the greenstone, imgeote 
on balls of zeolite, on chalcedony, on lamellar quart oe 
Stilbite—in same place, not abundant. It is commonly ass” 
ciated with chabasie, and the crystals, though small, a 
well defined, 
Analcime—in same place, very abundant, and is associated 
with quartz and amethyst, which are sometimes enclose! 
by analcime. It generally occurs in cylindrical, renifor™ 
and radiated masses. A few perfect crystals only hav? 
been observed. 
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