MINES BETWEEN CAMERON AND GILLETT. 
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from the croppings down to the level of a tunnel 1,000 feet long, near the level of 
Spring Creek. The total production is reported to have amounted to $12,000. 
Hill’s Manual gives $6,000 up to 1900. Little work was being done in 1904. 
The vein is contained in Pikes Peak granite, near the northwesterly trending 
contact of the Spring Creek granite. Its continuation across Spring Creek would 
carry it into the area of olivine syenite. The vein follows in part a phonolite dike 
which at the croppings is only 4 inches wide and is said to carry values up to $20. 
The general strike is northwest and the dip is 35° NE. In depth the vein straightens 
and in the tunnel dips 50°, appearing here as a dark streak, 8 to 10 inches wide, of 
crushed and partly replaced granite containing fluorite with some pyrite. The 
assay values are low. The present workings are in a winze 165 feet above the 
tunnel level. The vein is here 10 inches wide and distinctly crustified, consisting 
of quartz, fluorite, manganiferous dolomite, galena, zinc blende, and pyrite. This 
ore is said to contain 8 to 10 ounces silver and 2 to 3 ounces gold per ton. The gold 
values are probably in calaverite, though tills mineral was not positively identified. 
The pay shoot which was found at the croppings appears to pitch southeasterly on 
the plane of the vein, and it is hoped that a further extension of the tunnel will 
intersect it. 
AREA BETWEEN CAMERON AND GIEEETT. 
GEOLOGICAL FEATURES. 
The little town of Cameron is situated at the northern base of Bull Hill, near 
the head of Grassy Creek. The low hills north of the town consist of schist, gneiss, 
and the two principal varieties of granite, in irregular areas. A small outlier of the 
main breccia area covers Galena Hill. Near its contact the granite is often brec- 
ciated or shattered. North of this extends a rolling granite plateau on which, 2 
miles farther north, the town of Gillett is located. Trachyte and Cow mountains 
rise southeast of Gillett to an elevation of 1,000 feet above the plateau. A series of 
more or less continuous phonolite dikes with a general northerly trend traverse the 
granite between Cameron and a point 1 mile west of Gillett. A number of prospects 
and one or two mines are contained within this belt. 
SUNSHINE MINE. 
Situated on the southeastern slope of Galena Hill the Sunshine is of interest as 
being farther to the northeast than any of the mines in the main volcanic area. It 
is owned by the Fort Pitt Mining Company, of Pittsburg, Pa. The total production, 
including the ore taken from the Sunshine vein in Sedan ground, was estimated at 
$25,000 in January, 1904. 
The developments consist of an incline shaft following the vein for about 400 
feet, and four levels, representing perhaps 2,000 feet of drifting, besides a number 
of shallow shafts on the apex of the vein. The Sedan shaft, which connects with 
levels 2 and 4, is 250 feet deep and vertical. The elevation of the collar of the 
incline shaft is 10,180 feet. 
Examined underground, the country rock appears to be a coarsely brecciated 
mass of granite and schist, both of which are oxidized and kaolinized. A 15-foot 
phonolite dike crosses the property from northwest to southeast, and dips south¬ 
west at about 45°. 
