34 - Review of Dr. Jackson’s Final Report 
ore is found upon Baldface Mountain, in granite, at an elevation 
of fourteen hundred feet above the waters of the Saco. A num- 
ber of veins have been opened, one of which has a width in 
some parts of fifty-five feet. 
Jackson.—This is the locality of the tin, ore before noticed as 
having been discovered by Dr. Jackson. It is found on East- 
man’s hill, and occurs in veins (of which five have been discov- 
ered) accompanied by copper and arsenical pyrites, arseniate of 
iron, native copper, phosphate of iron, fluor spar and other min- 
erals. Some of the crystals are hemitropic, similar to those which 
are frequently found in the ores of Europe. The largest vein 
measures in its widest part eight inches. The richest specimens 
of the ore in the narrow veins yield about seventy three per cent. 
by assay. It occurs both compact and crystallized, but there 
eannot probably be enough obtained from the veins yet discovered 
to make it profitable to work it. 
Eaton.—There is a very valuable vein of the sulphurets of 
lead and zine in this town, which has been wrought to some ex- 
tent for lead. ‘The vein is however mostly made up. of the sul- 
phuret of zinc, and is about six feet in width. Dr. Jackson ex- 
presses the opinion that it might be profitably worked, provided 
the zine ore should be reduced with that of the lead. The former 
contains about sixty three per cent. of metallic zinc, the latter 
about eighty four per cent. of lead. 
Frrancestown.—Soapstone of the richest quality exists here, 
and is extensively wrought for the markets of Boston oni other 
places. 
Amherst.—In this town is a bed of limestone in mica slate, 
associated with which are found some interesting minerals. Ege- 
ran in large crystals, some measuring four inches in length and 
two and a half in diameter, of a deep red brown color. They 
occur in right square prisms, with lateral and terminal edges and 
solid angles replaced. Large dodecahedral crystals of the cinna- 
mon stone garnet are also abundant, both in the limestone and in 
quartz connected with it. 
There are likewise found in granite, in this town, crystals of 
magnetic oxide of iron, from one to two inches in diameter, and 
from the soil fine crystals of amethystine quartz (some of which 
are four inches in aera and eight inches in length) have been 
‘ploughed up. 
