Rocks and Minerals of Westfield. US 
Art. Il.—Notice of Rocks and Minerals in Westfield, Mass. 
By Emerson Davis. 
Professor SILLIMAN, 
Havine examined the rocks in this place, am prepared 
to mention a few facts relative to their position, and to the 
minerals they contain. 
On the mountain, 5 miles west of Westfield Academy, are 
two beds of serpentine; one of which, has never been men- 
tioned in the geological accounts of this region, that have 
been published. Itis imbedded in mica slate, and associated 
with primitive carbonate of lime. The limestone is at the 
south end of the bed, and they pass into each other, forming 
a stratified rock, with strata nearly perpendicular to the ho- 
rizon. These strata, for the most part, seem to be alterna- 
tions of Serpentine, and an unknown mineral resembling 
lime, about one inch in thickness. Sometimes they are found 
blended together, forming a compound similar in appearance 
to the Verd Antique. Were are found also veins of the 
same unknown mineral, serpentine, and green talc, associ- 
ated as represented in the following profile. 
1 } a 
i eS a 
Suis 
‘ om 1 ~M 
Ol ~ O ns o| 
a!lo ! 6 Hacer ay ts 
ODO} et REI BGs) 
@ |S u Poe LGD GD 
m1O 1 eo 2 al Md 
He. oo) i Sha 
SNS), aS ole 
a | =" Oh tn Rael ies 
Orlne tins Bie r) @ 
' oS , 
Gg 
a * 1 
—_— 
aT 
* This mineral has a specific gravity, between 2.3 and 2.5—readily 
scratches glass—fine foliated in structure, like primitive limestone— 
with difficulty melts into an enamel before the blowpipe—does not ef- 
fervesce with acids. K 
In some places colour rose red or purple. The mineral is suspected 
to be an interesting one, and is now under consideration. 
