MAGNETITE IRON DEPOSITS OF SOUTHEASTERN NEW YORK 89 
Sloatsburg ; the Morehead mine lies about the same distance north- 
west of the Bering, just over the county line, in Orange county. 
The regional strike in the vicinity of the Bering pits is north 31° 
east, the rocks dipping from 85° to go° to the southeast. The mine 
was worked through a series of cuts, some excavated through drift 
and now badly caved; and a shaft of unknown depth, now drowned. 
In the same direction of strike a few additional exploratory pits 
were stink beyond the swamp at the northern end of the workings 
and these are said to have found an extension of the ore body. 
Judging from surface conditions and the size of the open cuts 
the ore body occurs in a series of more or less tabular, irregular 
and roughly lenslike masses with a maximum thickness of about 15 
feet. Ore may still be found on the walls of some of the cuts. 
Samples taken from such places are massive, somewhat coarsely 
crystalline, blocky magnetite, frequently associated with very coarse 
bictite, which is plentiful among the rocks found on the dump and 
evidently a characteristic feature of this mine. 
The hanging wall is in part dioritic pegmatite (Pochuck), whose 
feldspars are more or less sericitized, with few ferromagnesian 
minerals, now wholly changed to epidote and chlorite, and a little 
magnetite containing titanite or ilmenitic inclusions now leucoxenized. 
Fractures traverse the rock, healed with chlorite and epidote. Cutting 
_ this pegmatite is an extremely quartzose, coarse granite (Pochuck 
granite), also part of the hanging wall, containing swamped and 
corroded remnants of the same feldspar which occurs in the 
pegmatite. 
The footwall is typical Pochuck-Grenville, containing streaks and 
bands of the coarse biotite mentioned as being found associated with 
the ore. It is made up chiefly of colorless to faintly pleochroic 
pinkish pyroxene (clinohypersthene), hornblende, biotite, plagioclase 
ranging from oligoclase to andesine and a little magnetite. The ore 
itself carries remnants of the same minerals found in the footwall, 
the feldspar remnants being sericitized and some of the included 
pyroxene having been converted to fine flaky talc. Associated with 
the magnetite in this ore is a little green spinel in minute grains. 
The ore, here as elsewhere, has replaced certain horizons in the 
Pochuck-Grenville by magmatic end-stage, or deuteric, processes. 
There are no additional data available with respect to the mine. 
The Morehead mine was worked by means of an open cut and two 
shafts, one at each end of the mine. The ore body is from 8 to 10 
feet thick, striking north 31° east at the most southerly opening and 
