Mineral Industries and Geology of Certain Areas - Vermont Agency ...

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REPORT OF THE VERMONT STATE GEOLOGIST. 35
was sought as a final product, but for years the ore, which, like
almost all our Vermont copper ore, is chalcopyrite mixed with
pyrite—that is, a mixture of copper pyrites and iron pyritescontaining
usually only a small per cent, 2 to 10, of copper, has
been mined only for copper, and this mine now has a furnace
for reducing the ore to matte which contains a high percentage
of pure copper, and during the year 1901, three hundred tons
of matte, averaging 98 per cent of copper were produced. The
entire output of this mine for 1901 was about 25,000 tons of ore.
Practically all the copper produced in Vermont for a number
of years has come from this mine. The ore body here is very
large and very favorably located for successful operation.
The old Ely-Goddard mine at Copperfield, of which Plate I
gives a general view, which has for some years been idle and
falling to ruin, was bought a couple of years ago by Mr. George
Westinghouse, and since that time a large force of men have
been busy putting it into working order.
Plate II shows another portion of this mine and especially
the dump heaps.
At several other localities in the State more or less work has
been expended in developing copper ore deposits, but none of
these has as yet produced any metal.
USEFUL MINERALS.
S0APsT0NE.—There is some quarrying done in a few of the
soapstone deposits, but so far as I have been able to ascertain
only a small quantity of the material has been sold.
TALc.—This mineral is found in numerous localities in the
State and at some of them it occurs in large quantity. This is
especially true of the beds at Stockbridge and Moretown.
MIcA.—This mineral, while it is found in small flakes all over
the State, does not occur in any quantity except in one locality,
at Sherburne. This deposit, when I last saw it, promised well.
As very few beds of usable mica have been found anywhere, even
a moderately small bed of it may be valuable.
Plates I and 11 by courtesy of The Vermonter.