REPORT OF THE DIRECTOR AND STATE GEOLOGIST 1903 187 



8 Nickel. Millerite, a sulfid of nickel, is occasionally found 

 in pockets in the hematite at the Sterling mine near Antwerp, 

 Jefferson co. The mineral occurs in radiating, hairlike crystals. 



9 Molybdenum. A sulfid of molybdenum, known as molybde- 

 nite and resembling graphite in color and luster, is found spar- 

 ingly in the rocks of New York State as follows. 



Warwick, Orange co. Two miles southeast of Warwick, molyb- 

 denite occurs scattered in irregular plates through granite 

 associated with rutile, zircon and pyrite. Molybdenite also 

 occurs at West Point in this county. 



PMlUpstown, Putnam co. In the gneiss adjoining the Philips 

 ore bed. Se^ iron pyrites. 



Brewster, Putnam co. Associated with serpentine and magne- 

 tite at the Tilly Foster mine. 



Clinton county. Sparingly distributed through the granite 

 rocks. 



Nonmetallic minerals 



1 Fluorite. Fluorite, or fluor spar, a fluorid of calcium, is 

 found to some extent; in St Lawrence county as well as in less 

 important localities in the State. Fluor spar is used principally 

 as a flux for iron, in the manufacture of opalescent glass and as 

 a source of fluorin in the manufacture of hydrofluoric acid. 



Maconih, 8t Lawrence co.^ A cavity containing about 15 tons 

 of finely crystallized fluorite in sea-green cubes, the latter often 

 12 inches on edge, was discoveTed in this town in 1889. The 

 dieposit was found in working a small vein in limestone, and the 

 material, which furnished beautiful specimens, has been mostly 

 distributed throughout mineral collections and cabinets. Smaller 

 deposits of similar material have been found at the lead mines 

 of Kossie and at Mineral Point, Hammond, Fine, Gouverneur and 

 DeKalb in the same county. 



Muscallonge lake, Jefferson co.^ A deposit of flourite which 

 was quite extensively woTked 50 years ago occurs on the south- 



^Kunz, George F. Am. Jour. Sci. Ser. 3. 1889. 38:72. 



