258 Geology and Mineralogy of Salisbury. aes 
Mica—Black, yellow and white, disseminated in quartz 
r and mica-slate, sometimes occur in pyramidal crystals. 
Schori—in amorphous masses, and fragments composed 
. of capillary crystals. 
. ourmaline—abundant, brown and yellow, in quartz 
and carbonate of Jime—crystals irregular—generally flat. 
compressed, and longitudinally striated. 
_ Feldspar—compact variety in mica-slate, and detached 
_ Masses. 
~ Beryl—occurs in beautiful greyish green crystals, asso- 
4 ciated with quartz, hornblende, augite, epidote, massive 
garnet, &c. small. 
i. acke—in large blocks, scattered throughout this re- 
i. gion, and Berkshire County, resembles that found in Col- 
__umbia County, N. Y. 
a Scapolite—in white four sided prisms, and plates re- 
sembling mica, answers the description of that found in 
Chester. 
Garnei—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 
Zoisite 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 erys- 
tals radiating from a centre, seyeral inches in length, of @ 
pearly lustre. The crystals are sometimes tinged with 
ye 
ow. 
Augite—a rare variety of this was called nephrite by Prof. 
Dewey in the last number of the Journal. He has since ‘7 
ascertained it tobe augite. It scratches quartz, yet anal- f 
ysis shows it to contain more lime and lesssilex thanis us®- 
al for this mineral. It occurs amorphous of a white an 
greenish white color, and in tabular and six sided prisms, 
several inches in length. Associated with epidote. 
ite, &c. and contains red oxid of titanium. 
stg os 
= 
