142 NEW YORK STATE MUSEUM 



if the ore were obtainable in larger quantity. The deposit was 

 operated in a small way 10 years ago by H. D. Tann of Pierces 

 Corners. 



About one-half of a mile south of Pierces Comers or Macomb 

 a lead vein occurs on the Downing farm where operations were 

 carried on in a small way about 12 years ago. There is a shaft 

 25 or 30 feet deep. It was operated by J. H. Donovan. 



About I mile south of Pierces Corners is an occurrence of lead 

 on the Pennock farm. The developments consist of two vertical 

 shafts about 200 feet apart located on a fractured zone which strikes 

 about north 70° west and measures about 15 feet wide. The 

 westerly shaft is said to be 150 feet deep. Near the eastern shaft 

 there is an open cut of 15 feet into the hill in which the shaft has 

 been sunk and from this a considerable quantity of ore was taken 

 a few years ago, although the main operations were carried on by 

 J. B. Morgan in the middle of the last century. The stack of an 

 old furnace still stands on the property. 



Lead also occurs on the Jones farm about i mile southeast of 

 Pierces Corners, where some prospecting was carried on about 10 

 years ago. 



An interesting occurrence of galena is found about three-quarters 

 of a mile north of the village of Redwood, town of Alexandria, 

 Jefferson county. It is exposed on the sides of a low cut along 

 the railroad north of the Redwood station. The outcrop of the 

 vein is in Potsdam sandstone which forms a knob with an exposed 

 thickness of from 35 to 40 feet. The sandstone along the sides 

 of the vein is much fractured and shows vertical joining. The 

 main vein is about 4 feet wide and contains 2 ■ feet of solid calcite 

 in the middle with a foot or so of brecciated sandstone cemented 

 by calcite on either side. The strike is north 55° west. The vein 

 can be traced from the railroad cut to the southeast across the 

 adjoining field to a little ravine and west of the cut for about 200 

 feet over the top of the hill. It has been opened in several places 

 but the date of the operations are not known. The vein does not 

 carry any large amount of galena. It is apparent from the field 

 relations that the sandstone overlies Grenville limestone as the 

 latter is exposed in considerable force just north of the sandstone 

 knob. The limestone itself is characterized by a small amount of 

 galena in disseminated grains and crystals. 



Galena was mined at one time in the town of Ancram, Columbia 

 county, at the locality known as the Ancram Lead Mines, a station 

 on the Central New England Railroad between Boston Comers and 



