190 NEW YORK STATE MUSEUM 



Little Falls and Fairfield a lamellaf yellowish white variety has 

 been observed.^ 



Syracuse, Onondaga co. At a point about % of a mile east of 

 Syracuse, crj^stallized barite is found in interlacing crystals 

 associated with celestite in limestone. 



Ancram^ ColumMa co. A white massive variety of barite occurs 

 at the Ancram lead mine in veins traversing slate and limestone. 

 4 Celestite. Celestite, the sulfate of strontium, is used to some 

 extent in the production of nitrate of strontia for the manufacture 

 of fireworks. Its value for this purpose consists in its property 

 of imparting a brilliant crimson color to the flame. The demand 

 for it is however small, and it is not mined within the limits of 

 New York State. Small deposits of celestite have been noted at 

 the following localities. ; 



Lochport, Niagara co. Celestite occurs at Lockport in grayish 

 blue crystals, often semitransparent, in geodes in ihe limestone 

 associated with calcite, dolomite and gypsum. Also in opaque 

 white or bluish white lamellae and coarsely fibrous masses. 



Rossie, St Latvrence co. At the Kossie lead mine celestite is 

 found in delicate blue crystals associated with calcite. 



Jefferson county. Near Starkville, Brownville, Depauville, 

 Chaumont and Theresa. 



5 Magnesite. Magnesite, a carbonate of magnesium, has a lim- 

 ited use in the manufacture of magnesium salts, such as Epsom 

 salts, magnesia etc., and in the manufacture of paint, paper and 

 fire brick. Small veins of magnesite occur in the serpentine 

 formations of New York in several localities, but nowhere in 

 commercial quantities. 



Rye and New Rochelle, Westchester co. At New Rochelle and 

 the vicinity of Rye and Port Chester the serpentine outcrops 

 contain veins of magnesite. The mineral is massive, white in 

 color and breaks with a conchoidal fracture somewhat resembling 

 that of unglazed porcelain. 



TompMnsville, Richmond co. Magnesite here occurs in thin 

 veins and cavities in serpentine. 

 ^ Beck, Lewis C. Natural History of New York. Mineralogy. 1842. p. 205. 



