258 Geology and Mineralogy of Salisbury. 
Mica—Black, yellow and: white, disseminated in quartz 
and mica-slate, sometimes occur in pyramidal crystals. 
 Schorl—in amorphous masses, and fragments composed 
of capillary crystals. 
Tourmaline—abundant, brown and yellow, in quartz 
and carbonate of lime—crystals Psi lara ae ape flat. 
compressed, and longitudinally striated. 
Feldspar—compact variety in mica-slate, and detdéhed 
masses. 
Beryl—occurs in beautiful greyish green crystals, asso- 
ciated with quartz, hornblende, augite, epidote, massive 
garnet, &c. small. 
Wacke—in large blocks, scattered throughout this re- 
gion, and Berkshire County, resembles that found in Col- 
umbia County, N. Y. 
Scapolite—in white four sided prisms, and plates re- 
sembling mica, answers the description of that found in 
Chester. ' 
Garnet—very abundant in mica-slate, crystals perfect, 
from the size of a pin’s head to an inch in diameter, fre- 
quently truncated on all their edges. It also occurs in 
granular amorphous masses of a reddish color. 
Epidote—occurs in compact masses of a greenish grey 
color, and in hexagonal crystals, associated with sulphuret 
of iron, augite, quartz, and hornblende. The variety 
zolsite is not uncommon. 
Tremolite—abundant in dolomite, and investing the sur- 
face of quartz .Presents all its varieties common—fibrous 
and baikalite. The last is often very beautiful, the crys- 
tals radiating from a centre, several inches in length, of a 
pearly lustre. ‘Phe crystals are sometimes tinged with 
yellow. 
Augite—a rare variety of this was called nephrite by Prof. 
Dewey in the last number of the Journal. He has since 
ascertained it tobe augite. It scratches quartz, yet anal- 
ysis shows it to contain more lime and lesssilex than is usu- 
al for this mineral. It occurs amorphous of a white and 
greenish white color, and in tabular and six sided prisms, - 
of several inches in length. Associated with epidote. 
graphite, - and contains red oxid of titanium. 
