36 NEW YORK STATE MUSEUM 



furnace appears to be practicable. It may be pointed out that prac- 

 tically all of the so called nontitaniferous magnetites of the Adiron- 

 dacks, as probably elsewhere, carry titanium, though the amount, 

 of course, is small, usually less than i per cent. 



Besides the possibility of concentration, it is not unlikely that a 

 portion of the titaniferous ore can be used in crude state. Analyses 

 show that the titanium is extremely variable. Some ores from the 

 district contain only about 5 or 6 per cent, so that by mixing with 

 ores free from titanium the percentage could be reduced to a frac- 

 tion of that amount. The open-hearth process of steel making 

 furnishes another possible outlet. 



The Lake Sanford deposits are situated in the interior of the 

 Adirondacks, on the slopes of the rugged mountain group centering 

 around Mt Marcy. Their elevation of outcrop averages about 

 2000 feet above sea level. The nearest railroad point is North Creek, 

 about 30 miles distant. The problem of transportation is thus 

 a critical one; the construction of a branch railroad is now under 

 consideration. 



Forest of Dean. The Hudson Iron Co. began active mining 

 at this locality during 1906. The company took over the mine in 

 October 1905, but as the work of unwatering and reequipping ex- 

 tended over several months, no shipments were made until the 

 following summer. 



The Forest of Dean mine is situated 5 miles west of Fort Mont- 

 gomery, Orange co. It has the longest record as a producer, prob- 

 ably, of any mine in the country that is now under operation. Ac- 

 cording to Beck it was worked as early as 1756. In the period 

 from 1865 to 1894, when it was under the ownership of the Forest 

 of Dean Iron Ore Co., the production amounted to over 500,000 tons. 

 The ore body consists of an immense shoot that is apparently 

 folded upon itself into a synclinal, the two wings of which extend 

 to the surface. The wall rock and ore dip steeply southeast, while 

 the latter pitches to the northeast. The horse of gneiss separating 

 the two wings of the fold wedges out with depth. Access to the 

 underground workings is had through a slope driven on the foot 

 wall. The slope has been carried to a distance of 1700 feet from 

 the surface and a vertical depth of 700 feet. 



The ore is a rich magnetite of non-Bessemer character. An analy- 

 sis quoted from Smock's report shows the following percentages : 



Iron oxid (Fe.Og) 83.56 



. Silica (SiOs) S-OO 



Phosphoric anhydrid (P2O5) 2.30 



