98 NEW YORK STATE MUSEUM 
A sample of ore taken from a dump at one of the shafts consists 
of brilliant, coarsely crystalline magnetite, mixed with pyrite. A 
petrographic study of this ore reveals the usual altered remnants of 
unreplaced rock; in this case epidote, calcite and colorless garnet 
(see plate 10, figure 2), with zoisite, actinolite and tremolite, all 
derived from some former original evidently more or less calcareous 
in composition. Remnants of pleochroic green pyroxene likewise are 
contained in the magnetite. 
Another sample of ore from a dump near a second shaft con- 
tained remnants of green pyroxene, and considerable scapolite; 
therefore the magnetite in this mine is judged to have replaced an 
especially calcareous phase of the Pochuck-Grenville, so that garnet, 
tremolite, actinolite and scapolite have formed as a partial result 
of the magmatic end-stage replacement processes. 
The Raynor and Taylor mines. These mines lie south of the 
highway and about one-half of a mile from the Standish. They were 
opened on the same ore body, widest toward the northeast where a 
shaft of unknown depth, now full of water, was sunk. Open cuts 
along the course of the ore show an ore body from 6 to Io feet wide, 
dipping 90°. Toward the southwest the ore forks and becomes 
two roughly parallel bands, divided by a horse of rock which reaches 
a width of almost 30 feet. Along the trend of the ore there are 
numerous openings, some only a few feet in width, some wider; 
they are 20 to 4o feet in depth, they all contain water and they 
extend to a drift or tunnel at the south end, now drowned. At 
the extreme south end of the workings a vertical shaft was sunk in 
rock, depth indeterminable, into which a narrow, deep cut opened; 
shaft and cut are both full of water. 
The footwall at the south end of one of the larger cuts is a syenite- 
soaked Pochuck-Grenville, which grades into typical modified 
Pochuck-Grenville a few feet from the cut, more or less invaded by 
the syenitic facies of the Pochuck, traversed by stringers of quartz 
and by veins and stringers of pegmatite. 
On the dumps may be found typical Pochuck-Grenville, heavily 
epidotized rock in quantity, and chloritized, carbonated and serpen- 
tinized rock of various sorts, as well as a curious calcite breccia. 
Petrographic study of epidotized material collected from the dump 
prove it to be strongly epidotized, carbonated and chloritized 
Pochuck-Grenville. 
The magmatic end-stage emanations at this particular point seemed 
to have been unusually rich in those elements which were capable, 
