40 ECONOMIC GEOLOGY. 



inches wide, which at the bottom of the shaft has expanded to nearly three feet in 

 average width. Tlie general appearance of this property reminds one of the rock 

 worked near Lennoxville, P. Q., on what is known as the Clark mine. On the Little 

 estate the vein must extend for 150 rods, and the surface descends rapidly to the 

 Connecticut river, so that a fine opportunity is here presented for the excavation of 

 an adit along the course of the vein, which will both drain the shaft above and prove 

 the value of the rock for a considerable distance." 



In September, 1877, I found the mine in possession of gentlemen from Maine, who 

 were at work sinking the same shaft I saw in 1869. It had then reached the depth of 

 60 feet. Another shaft, 78 feet distant, has been sunk in the barn to the depth of 53 

 feet ; and a drift has been started to connect them together, the space not excavated 

 being only 16 feet. In the south shaft there is a drift northerly 25 feet at the depth of 

 30 feet, and iS feet to the south at the 25-feet level. At the bottom of this shaft a 

 breadth of two feet contains much copper associated with quartz bunches. The rest of 

 the space in the shaft has more or less of the ore scattered throughout. Neither wall 

 was seen, the sinking having been prosecuted with the idea of reaching as great a depth 

 as possible, without reference to its bounds. The large pieces brought out of the 

 south shaft make the most brilliant specimens of any seen in the range, there being 

 very little iron pyrites to lessen the bright yellow color. Large piles of ore are found 

 in the barn and yard. One lot of twelve tons of seven per cent, ore has been sold from 

 the barn shaft, and much remains there dressed to about the same proportion. There 

 is no shaft-house except the barn, but a very good boarding-house for the miners. 

 We traced the vein northerly upon the crest of the hill, the manifestation of it there 

 consisting of pyritiferous schists. The width of the best part of this vein is thought to 

 be six feet; and the two walls, when seen, consist of the homogeneous "sandstone" 

 of the country. The hoisting is done by horse-power ; and there is considerable water 

 in the mine. 



During the past winter, work has been continued. A drift has been driven 30 feet 

 into the hanging wall, in order to determine the width of the vein. Ore was found 

 sprinkled through the whole distance. 



Haviland Mine. This mine is situated on the Bath line, on the road from Lisbon to 

 Mclndoes Falls over Gardner mountain. It embraces a tract of land amounting to 160 

 acres, partly wooded and partly suitable for pasturage. The shaft-house is half a mile 

 back from the highway. The argillitic schists usually dip about 70° S. 40° E. Narrow 

 bands of diorite rock or "sandstone" are interspersed with pyritiferous schists. At 

 the time of my visit, September 27, 1877, the shaft had been sunk 169 feet, sloping 

 with the vein, steeper at the top than at the bottom. It is in a pyritiferous belt 200 

 feet wide at the surface. At 70 feet is a short drift, where copper ore is disseminated 

 through the schist. At 168 feet the rock has been cut 40 feet below the lower wall, and 

 30 feet towards the hanging wall. Through this 70 feet of cutting, seams of cuprifer- 

 ous mundic and copper sulphurets are constantly met with. There is a marked improve- 

 ment over the surface rock in what has been brought up from the lowest depths. Four 



