194 ECONOMIC GEOLOGY OF SILVERTON QUADRANGLE, [bull. 183. 
fragments of altered rhyolitic country rock and ore which is appar- 
ently of low grade. Toward the southwest the vein has been dis- 
turbed by post-mineral movement and is accompanied by crushed 
wall rock and soft gouge. The course of the vein would carry it into 
the Old Lout shaft, and it is probable that both mines are on the same 
fissure. 
Alabama mine. — This mine, situated on the east side of Pough- 
keepsie Gulch, about half a mile south of the Old Lout tunnel, is 
commonly supposed to be on the same lode as the Old Lout, the strike 
of the Alabama lode being N. 35° E. The dip is southeast at 70°, 
although locally variable. In general character the lode resembles 
that seen in the accessible portion of the Forest workings, but it is 
more irregular and shows less ore. It is essentially an irregular 
stringer lead, passing sometimes into a breccia of country rock 
cemented by quartz and sometimes dwindling to a few narrow and 
tight stringers. The country rock is rhyolite flow-breccia. Consid- 
erable prospecting has been done by tunnels, drifts, and winzes, but 
apparently no ore was stoped. The mine has been long idle. On the 
other side of the gulch some work has been carried on upon the same 
vein, which here appears to dip about 60° to the southeast and shows 
similar ore. 
The ore of the Alabama consists of galena, chalcopj'rite, and pyrite, 
in a gangue consisting of quartz and barite. 
Poughkeepsie mine. — This property is situated half a mile up the 
gulch from the Alabama and on the same side. It was located in 
1874 and has produced in all about $12,000. The strike of the vein is 
N. 62° E., and it is practically vertical. It is a strong and apparently 
fairly simple vein, frozen to the walls of rhyolitic flow-breccia. It 
produced a silver ore carrying bismuth. The pyrite in the vein is also 
said to have carried good values. The tetrahedrite, on the contrary, 
was' poor ore. Argentite is reported 1 as occurring in the ore as mined 
in 1875. The mine was worked through two tunnels. It has been 
idle since 1891 and inspection was confined to the surface. 
The ore in the bins showed chalcopyrite, pyrite, and tetrahedrite in 
a quartz gangue. 
Amador mine. — This mine, formerly worked through two tunnels, 
lies on the west side of the gulch. It was deserted in 1899 and little 
could be ascertained of its history or product. The lower tunnel was 
originally run in on a small vein striking N. 30° E., but it soon turns 
and cuts a vein of which the course is N. 80° W. This vein dips north 
about 60° and is a solid and fairly regular but not heavily mineral- 
ized mass of quartz. The lode has been stoped and a shaft sunk 
from the drift, evidently some years ago. The upper tunnel, 100 feet 
above, is run directly on the main lode, which is here nearly vertical, 
and shows from 3 to 5 feet of solid white quartz in the croppings. 
1 Raymond: Mineral Resources west of the Rocky Mountains, 1875, pp. 383-386. 
