This quarry was "in the town of Frankfort, on top of Mosquito Mountain, 2 miles S. 10° E. of Frankfort village. This mountain is a granite dome rising 545 feet above tidewater, close by, with a steep east face.." The operator was Hayward Pierce of Frankford in 1905. The granite in the quarry was reportedly a medium-gray color with milk-white feldspar crystals. It had a medium texture. Transport of the granite was by "about 7,000 feet of track and gravity cars from quarry to the cutting shed and wharf on Marsh River (South Branch Stream), which admits schooners of 14-foot draft."
The Mosquito Mountain Quarry was opened before 1837 and was located on the east side of the mountain. A later opening was located on the top and in 1905 this quarry measured 1,000 by 500 feet and had a maximum depth of 25 feet. At the time of the report, the quarry had not been operated since 1912 and was then abandoned.
The granite from the quarry was used for bridges, buildings, and the small sheets and waste for paving. Granite from this quarry was used in the following examples: the post office at Lynn, Massachusetts, and part of that at Chicago, Illinois; and the New York Central Railroad bridge across Harlem River.