970 NEW YORK STATE MUSEUM 



The Ellenville mine was first opened about 50 years ago since 

 which time it has been operated intermittently by different com- 

 panies. It is a noted locality for beautiful quartz crystals. The 

 deposit consists of a fissure vein intersecting the Shawangunk grit. 

 The width of the vein averages about 6 feet. Quartz is the princi- 

 pal gangue mineral, while the ore consists of sphalerite, galena and 

 chalcopyrite in varying proportions. Silver accompanies the 

 galena to the extent of a few ounces a ton. 



The workings comprise an inclined shaft that has been carried 

 down to about 200 feet on the vein and a series of levels 30 feet apart. 

 A mill for treating the ore has been erected near the mine. Before 

 smelting the concentrates must be subjected to a separation, which 

 the company plans to effect by magnetic methods. 



