44 Geology and Mineralogy of apart of Massachusetts, &c. 
12. scAPOLITE. 
Gray and white, lustre somewhat pearly, scratches glass, 
sometimes a four sided prism——prisms generally irregular, 
compressed, deeply striated longitudinally, often intersect- 
ing variously —melts into a porous, yellowish white glass or 
enamel with ease. Chester, with hornblende, augite, &c. 
Emmons. This mineral differs from tremolite, which it 
much resembles. The product of fusion does not exactly 
agree with the description in Cleaveland’s Min 
13. GARNET. 
The localities which abound with this mineral have been 
mentioned in the Geol. Sketch. Very large crystals are 
found in Hawley, in S~ mars slate. un garnet is found in 
Florida. The common form is he dodecaedron with 
rhombic faces. About * Middlefield, " ge also the form of 
the trapezoedron, and the dodecaedron truncated on its 
solid angles so as to form long hexedral faces. Emmons. 
The principal var. is the common garnet, 4 
Var. Melanite. 
In hornblende in Chester. 
14, EPIDOTE. 
foe hornblende rocks, in Worthington, Middlefield, 
and Chester—color, some shade of green. Sometimes al- 
so in grains. 
Var. Zoisite. 
Gray, flattened prisms, striated. Chester. 
15. IDOCRASE. 
Hyacinth red,—lustre vitreous—fracture uneven. Em- 
mons. Occurs i in imperfect crystals, sometimes nearly 
