THE MINING AND QUARRY INDUSTRY I9I12 29 
these quarries to the Bridgeport Wood Finishing Co., for use as 
wood filler. In addition, Kinkel & Son grind some quartz at a 
mill south of the quarries. 
The latter company opened a new quarry in the spring of 1912, 
on the Bullock property, 2 miles south of the Bedford quarries. 
The opening lies west of the Hobby quarry on a parallel lens or 
dike. The pegmatite body measures about 30 feet in thickness, 
strikes northeast and dips 80° northwest. The wall rock as seen 
near the contact is a mica schist resembling the Manhattan schist 
farther south. The opening into the hill is about 75 feet long and 
shows a face 30 feet high. It can be deepened considerably without 
difficulty, as the present level lies near the summit of the hill. The 
feldspar differs from the Bedford varieties in that it is practically 
all of buff or cream-color and is shown by microscopic examination 
to consist of an intergrowth of microline and albite. The two 
kinds form alternating bands with the microline predominant, in 
the proportion, of 2 or 3 to 1. In the Bedford quarries, the two 
varieties are segregated into a red microline and a white albite. 
There is very little intergrowth of feldspar,and quartz and most 
of the product is shipped as no. 1 grade. The feldspar builds 
crystals that measure up to 2 or 3 feet in diameter and which occa- 
sionally show well-defined faces. The quartz is of smoky appear- 
ance. There is some muscovite in their scales and sheets associated 
with the feldspar, but it is mostly segregated. A black tourmaline 
and dark red garnet are among the accessory constituents. 
GARNET 
The production of abrasive garnet in the Adirondack region has 
continued from year to year with little change. The annual total 
usually is between 4000 and 5000 short tons, now and then slightly 
exceeding the latter figure. This seems to indicate a fairly stable 
market which affords the basis for a small and somewhat special- 
ized industry, but which could hardly accommodate any large addi- 
tional supplies of the mineral, as have been in prospect at different 
times, without radical readjustment of the present conditions. So 
far, no permanent or serious competition has developed as the 
result of mining operations in other sections of the country. For 
the last few years, however, there has been an importation of 
Spanish garnet which fills some of the requirements formerly met 
by the local product. 
