pa att] EMERY. 7l 
Some of the ore that lias been mined here carries a very high per- 
centage of garnet. 
The analyses that have been made of this ore all show a high per- 
centage of alumina, which was to be expected, as the spinel is an 
alumina mineral, (MgFe)O.Al 2 3 , containing about 50 per cent of 
this oxide. An error is very often made in judging the percentage of 
corundum in an ore by calculating as corundum the total percentage 
of alumina obtained in a chemical analysis, which would represent, 
however, the alumina contained in all the aluminous mineral compo- 
nents of the ore. 
Some of the ore at these mines is undoubtedly a true emery, but a 
considerable portion of it is a mixture of spinel and magnetite, which, 
while not a true emery, will make a useful abrasive. This whole ore 
body might be called a spinel-emery. 
From whal has been said regarding 1 he occurrence of the emery in 
these IVekskill deposits, their pockety nature is what would be 
naturally expected and this has been characteristic of all the mining 
that has been done in this district. 
The Jackson .Mills Company, of Kaston, Pa., is now the Largest 
miner in this section. It has Leased the emery deposits on the land 
of Isaac .McCoy, ■'! in iles soul heast of IVekskill. Its principal work is 
on the summit of a hill about one-half mile south of McCoy's house 
and consists of an open cu1 t0 to 50 feel deep, to feel Long, and 12 
lo 20 feel wide. The emery ore is from 1 to 6 feel wide, but is 
broken up by bands of serpentine and chloritic rocks. In some of 
the ore the corundum is very distinct, occurring in elongated bluish 
white crystals up to 5 mm. long. This ore is \cvy \'n>(> from garnet. 
Anot her deposit of emery has been encountered 50 feel below the 
summit, and still another 25 feel farther down. No mining has been 
done at either of these localities. 
The ore is hauled by teams to IVekskill, where it is shipped by rail 
to Kaston, Pa. 
On a hill 1 mile east of the McCoy mine II. M. Quinn, of Phila- 
delphia, Pa., has mined on the land of .John II. Buckby. Pockets of 
emery were encountered on the summit of the hill and at a number 
of points on its western slope, but they soon pinched out. About 50 
feet below the summit a face of rock 15 to 20 feet high and 40 feet 
across has been exposed. The only emery seen here is the remnant 
of a pocket. 
As far as could be learned the emery deposits of the Tanite Com- 
pany of Stroudsburg, Pa., are also leased. They are on the lands of 
Henry Heady, Oscar Dalton, and David Chase, and are for the most 
part similar to the deposits just mentioned. The ore on the land of 
Henry Heady is composed largely of garnet, and a considerable por- 
tion of it has been shipped by the Tanite Company to their mill at 
Stroudsburg. 
