MAGNETITE IRON DEPOSITS OF SOUTHEASTERN NEW YORK 99 
by interaction with the rock invaded, of producing epidote, chlorite, 
serpentine, carbonate and quartz, with more or less pyrite, which in 
this instance is an associate of and related to the epidote and co- 
related products. 
According to Putnam ™*° the mines just described were called the 
Taylor, Ferro Hill and Warwick. The Warwick of Putnam is pre- 
sumably identical with the mine called the Standish by the writer, 
and the Ferro Hill is probably the Raynor. All these properties were 
in operation previous to 1880, the total output amounting to 57,271 
tons. The average composition of the ore from the Standish 
(Warwick) mine is given by Putnam (op. cit.) as 52.35 per cent 
iron, 0.092 per cent phosphorus and 2.748 per cent sulphur. 
Specimens collected by the writer show many features of great 
petrographic interest, but this phase of the situation can not be 
included in this bulletin. 
The group of mines lying along this belt of ore are probably 
capable of producing a considerable quantity of magnetite provided 
they are properly exploited, but the ore is high in sulphur and less 
desirable for that reason. 
THE FOREST OF DEAN GROUP 
Included within this group are the Forest of Dean mine, the 
Wetherby, Tower and “ Rattlesnake” mines. Of these, the only one 
of importance is the Forest of Dean mine. 
The Forest of Dean mine. This is one of the oldest productive 
mines in the Highlands. It has been in operation since 1756, 
although not continuously, and during that time it has produced 
almost 2,000,000 tons of ore. 
The mine is located about 5 miles west of Fort Montgomery and 
just east of the state road, in the valley of Popolopen creek. Dur- 
ing the period between 1865 and 1894 the mine was owned and 
operated by the Forest of Dean Iron Ore Company. The production 
amounted to over 500,000 tons of ore **. Operations were apparently 
suspended about that time and were not actively resumed until 1905, 
when the Hudson Iron Company began dewatering the mine; 
shipping was resumed the following summer. The present operat- 
ing company is the Fort Montgomery Iron Corporation, which 
succeeded the Hudson Iron Company. The average annual 
140 Putnam, B. T. Tenth Census Report, 1880. 
141 Newland, D. H. The Mining and Quarry Industry of New York State. 
N. Y. State Mus. Bul. 112, p. 36. 1907. 
