THE MINING AND QUARRY INDUSTRY igi2 3 1 



Outside the rather limited area that includes the above named 

 localities, the only occurrence of garnet that has recently attracted 

 attention as a basis of mining operations is in northern Essex 

 county, a few miles south of Keeseville. The deposits lie on 

 Mt Bigelow, near the border but within the area of anorthosite — 

 the basic igneous rock that forms the central part of the Adiron- 

 dack^. They consist of bands, lenses and irregular bunches of 

 granular or seemingly massive garnet which is fairly pure, except ' 

 for inclusions of green pyroxene. They are inclosed directly within 

 the anorthosite. Some of the bands or lenses as seen on the surface 

 are 40 feet across, nearly solid garnet. They are worked in a 

 rather small way by the American Garnet Co. of New York. A 

 similar deposit is reported from the vicinity of Mt Pokamoonshine, 

 southwest of Mt Bigelow. 



The production of garnet by the different mines in the Adiron- 

 dack region amounted last year to 41 12 short tons valued at 

 $117,325, as compared with 4285 short tons valued at $121,759 in 

 191 1. These totals represent practically the extent of the industry 

 in this country. Imports of abrasive garnet were reported by the 

 collectors of customs at Boston and New Orleans, at which ports 

 548 tons valued at $9271 were received in the calendar year. The 

 imports for 191 1 were 693 short tons, with an invoice value of 

 $10,526. With the exception of a small shipment of 1200 pounds 

 from Nova Scotia, probably originating in Newfoundland, the 

 garnet was all imported from Spain. 



GRAPHITE 



The graphite mines in the Adirondacks last year contributed 

 about the usual product of refined crystalline graphite, but there 

 were fewer developments than for some time. The output was 

 2,628,000 pounds and represented a value of $142,665. The total 

 for 191 1 was 2,510,000 pounds with a value of $137,750. There 

 was little change in prices, the average having been 5.4 cents a 

 pound, against 5.5 cents in 191 1. 



The American mine at Graphite, owned by the Joseph Dixon 

 Crucible Co., continued as the main producer. This mine has had 

 an enviable record, and is still the most successful of its kind 

 in the State or in this country; it has been the pioneer in all that 

 relates to the technology of treating the disseminated flake graphite 

 which constitutes the principal source of the domestic production. 



The Empire Graphite Co., with mines and mill in the town of 



