MAGNETITE IRON DEPOSITS OF SOUTHEASTERN NEW YORK 83 
c Syenite-soaked and diorite-soaked Grenville, granitized and in- 
jected. 
d Extensively modified Pochuck-Grenville carrying clino-hypers- 
thene, granular green pyroxene (coccolite), hornblende, biotite, per- 
thite, plagioclase, quartz and apatite, cut by veinlets of magnetite and 
showing magnetite in end-stage relations. 
The few specimens studied, taken at random from the dump, 
seem to indicate the same sort of history outlined for the Lake ore 
body. 
No data were available as to the quantity of ore hoisted or as to 
the probable extent of the ore; it is stated that the ore body is 1 to 3 
feet in thickness. Judging from the samples of ore taken from the 
dump, the quality of the magnetite is fully equal to that taken from 
the Lake and other mines. 
The Lower California mine. About 800 feet southeast of the 
Upper California mine, just west of the highway, is situated an old 
opening called the Lower California mine. The mine lies in a 
swamp, and at the time of the writer’s visit nothing whatever was 
visible; the workings are completely drowned. The mine was de- 
watered by the Sterling Iron Mountain Railway Company, but 
proved so extremely wet by reason of its situation that further oper- 
ations were abandoned and it soon again filled with water. The 
ore body lies along the same line as the others of this horizon; the 
ore is of excellent quality, but it is only from 1 to 2 feet thick. 
About 300 feet from the shaft of this mine, along the highway, 
a garnetiferous, strongly biotitic and modified phase of the Pochuck- 
Grenville strikes approximately north 52° east, and dips 30° toward 
the northwest, thus showing the manner in which the structure 
accords with the postulated piching synclinal fold. The character of 
the modified Pochuck-Grenville at this point is especially expressive 
of its former origin, sedimentary in part. 
The Whitehead mine. One thousand feet northeast of the 
Lower California mine lies the Whitehead, the most easterly of the 
openings along the lower ore-horizon. This mine is also drowned 
and inaccessible. It is situated between the highway and the tracks 
of the Sterling Mountain Railroad. The mine was worked by an 
open cut, and through a shaft of unknown depth. The ore body is 
stated to be about 8 feet thick; it strikes north 47° east, and dips 
toward the northwest about 45°. No additional information is 
available. 
