34 NEW YORK STATE MUSEUM 



Among the other localities for barytes in northern New York are 

 Richville, Hammond, Gouverneur, De Kalb, Rossie, Fowler and 

 Edwards, St Lawrence county. In the old lead mines of the town 

 of Rossie it occurs associated with calcite as gangue. In Fowler 

 it is found in geodes associated with hematite. The gangue of the 

 Edwards zinc ores contains i or 2 per cent of barytes in fine lamellar 

 crystals which are plainly evidenced in the process of separation 

 of the zinc sulphide. Crusts made up largely of this mineral were 

 collected by the writer from the weathered outcrop of the zinc 

 deposits. 



In the impure dolomitic limestone near Little Falls barytes occurs 

 in crystals within small veins and geodes and is frequently character- 

 ized by the occlusion of hydrogen disulphide. It is reported also 

 from Fairfield, Herkimer county. At the Ancram lead mines in 

 Columbia county it forms small veins that traverse the slate and 

 limestone wall rocks. 



In Schoharie county, town of Schoharie, barium is present in the 

 celestite which occurs in considerable quantity as nodular aggregates 

 of delicate crystals within the Bra3Aman shales and in the Rondout 

 waterlime. It may also be present as barytes in mechanical mixture 

 with celestite and strontianite. The occurrences have been described 

 by Prof. C. U. Shepard^ who applied the name " calstronbaryte " 

 to one form of material which apparently is a mechanical mixture 

 of barytes, calcite and strontianite. Beck supplies a record of the 

 occurrence of barytes in Schoharie. " Heavy spar also occurs 

 associated with strontianite, in the water limestone in the vicinity 

 of Schoharie courthouse. In such cases it is generally found in the 

 form of laminae which cleave readily, and sometimes present two 

 or more faces of the primary prism. In all the specimens which 

 I have examined, it is mixed with carbonate of lime, and also with 

 portions of strontianite. Indeed, these two substances are so 

 abundant in this limestone that the massive specimens of heavy 

 spar are seldom pure." 



Beck in his report also mentions a locality in the town of Carlisle, 

 about 8 miles northwest of Schoharie village, where a fibrous form 

 is found in considerable abundance in a dark shale. The latter 

 may be the Brayman shale. 



Grabau^ has described a strontium-barium sulphate from near 

 Schoharie where it occurs in the waterlime that is exposed on the 



1 American Jour. Sci., v. 27, 1835. 



2 Geology and Paleontology of the Schoharie Valley, N. Y. State Mus. Bui. 92, 

 p. 360-61, 1906. 



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