GYPSUM DEPOSITS OF NEW YORK 39 



drilling may bring some to light. The various cuts made by the 

 Ganiargua creek northeast of Victor -have uncovered several gypsum 

 masses of the pockety type, and quarrying was at one time under- 

 taken. A mill and quarry were operated on the C. M. Conover 

 farm i^ miles east of Victor on the north side of the creek. The 

 gypsum, for its kind, was of good grade, 40 feet thick, and had a 

 large sale for land plaster. The quarry 'has been idle for 15 years. 

 In the later years of quarrying, stiripiping became such a trouble- 

 some feature (there is 30-40 feet of drift) that a tunnel was driven 

 at the base of the hill, with a breast of 14 feet. Gypsum was also 

 quarried at one time in the Goose Egg, an oval hill about i^ miles 

 north of the Conover farm. 



On the Conover farm there have been found by core drilling two 

 layers of gypsum resembling in appearance that seen at Garbutt, 

 AkrO'U and Oakfield. This is the most easterly occurrence of such 

 pure beds in the State and is, accordingly, of great interest. The 

 series of core drill holes were put down in the flat area near Ganar- 

 gua creek about two years ago under the supervision of Mr C. L. 

 Tuttle; after going through 19 feet of soil and 16 feet of water- 

 limes, the first gypsum vein, 8 feet thick, was encoimtered. At 104 

 feet, a secoaid seam was struck, its width being 6 feet thick. The 

 cores were examined by the writers and the gypsum appeared to be 

 of good quality, the lower vein being light colored and fine textured, 

 resembling the Oakfield gypsum, while the upper one was less pure 

 and dark colored, though firm, and massive, resembling the Garbutt 

 rock. An analysis oi the material made on chips taken along the 

 whole gypsum portion of the core shows 96 per cent gypsum accord- 

 ing to Mr Tuttle. Calcining tests show the lower vein to bum and 

 set to a whiter color. The Victor Gypsum Co., of whidh Mr C. L. 

 Tuttle of Rochester is president, controls this deposit, having an 

 option on the Clara Conover, the Eliza Conover and the Mark 

 Gourley farms, in all amounting to 365 acres. Plans bave been 

 completed for a switch from the main line of the Lehigh Valley 

 Railroad to the proposed shaft house, but the actual operations have 

 been delayed for two years. If the deposit should prove extensive, 

 a large industry could probably be establisihed, since the Lehigh 

 Valley Railroad passes right throngh the district and connects di- 

 rectly with the large portland cement factories of Pennsylvania. 



The Lehigh Valley Portland Cement Co. attempted to loeate 

 gypsum on the hill nearby and it is stated that they struck 5 or 6 

 feet of medium grade gypsum but decided not to work it. Other 



