METALS AND THEIR ORES. 9 



of trap is connected with tlic vein in tlie foot-wall as low as fifty feet. 

 The greatest amount of free gold showed itself within twenty-five feet 

 of the surface. The gangue of the vein is quartz, about one twentieth 

 part being composed of magnetic iron pyrites or pyrrhotite, with a slight 

 sprinkling of yellow copper pyrites or chalcopyrite. The assays of the 

 rock were said to indicate at least $60 to the ton. It is probable that 

 the pyrrhotite contains gold, as the best specimens show free gold inter- 

 mingled with it. It is estimated, by good authority, that about three 

 hundred dollars have been obtained practically by milling from this 

 mine. 



The second opening, a few rods up the hill on the south bank, was 

 sunk 30 feet. The third, much farther south, was sunk 25 feet. All the 

 openings indicate a vein over four feet in thickness, similar to that already 

 described, and bounded by a hard quartzite resembling gneiss. The vein 

 is about an eighth of a mile removed from a clay slate. 



The company were not very successful in extracting the gold from 

 this mine, and ceased to excavate in December, 1866, allowing the open- 

 ing to become filled with water. They then bought one half of what is 

 known as the Dodge mine, and since the abandonment of the first, have 

 wrought the second diligently. Their capital stock has been reduced to 

 $48,000. 



T/ie Dodge Mine. In June, 1866, Mr. J. H. Barrett, while laboring on 

 the Dodge farm in Lyman, nearly two miles by road from Lisbon village, 

 discovered a stone projecting from the wall which contained a yellow 

 substance resembling gold. The specimen was sent down to S. K. Fisk, 

 of Lisbon, who pronounced the yellow mineral iron pyrites; but upon 

 cleaning the other face of the stone discovered a large sprinkling of gold, 

 the finest specimen ever found in New Hampshire. This discovery led 

 to a search for the vein. Three or four shallow openings were made, 

 and an association formed to work one half the property, known as the 

 Dodge Gold Mining Company, with a nominal capital of $75,000. The 

 Lisbon and Dodge companies have worked this mine jointly since the 

 early part of 1868, each transporting its share of quartz to the mills at 

 Lisbon village. The Dodge mill commenced operations March 12, 1868, 

 on the north side of the river. Each mill has ten stamps, and is capable 

 of crushing and amalgamating eight tons in twenty-four hours. 



