Geologic Map of the Maysville Quadrangle, Chaffee County, Colorado

numerous prospects on the ridge between Como and McClure Creeks (NE 1 / 4 , Section 6,
T49N, R7E) includes the Highland claim where a shaft intersected a 3 to 18 inch thick
vein with good galena (Crawford, 1913). Samples from the three main mines indicate
some silver is associated with copper, lead, and zinc mineralization associated with
vuggy quartz veins (sample 05-237/237A/238 with 27 ppm Ag, 0.38 percent Cu, 1.96
percent Pb and 0.96 percent Zn).
Crawford (1913) showed a cluster of mines associated with the Paymaster group
of unpatented claims about a mile west of Maysville (SE 1 / 4 , Section 32, T50N, R7E).
Several small shipments of silver-lead ore with gold were made from five 125 to 300 ft
long adits. Samples from two of the mines indicate significant silver and some gold
associated with copper, lead, and zinc mineralization (sample 05-648/649 with 152 ppm
Ag, 2.12 ppm Au, 1.09 percent Cu, 3.88 percent Pb, and 0.45 percent Zn). Crawford
(1913) showed another cluster of mines and prospects about 0.5 mile southwest of
Maysville. These mines and prospects are located in NE 1 / 4 , Section 4, T49N, R7E and
include three caved adits. Cu-oxide and clotty to disseminated sulfides occur in both
hornblende intermediate gneiss (Xhig) and pegmatite (YXp). Mineralization from a mine
and prospect pit indicate significant gold and silver associated with copper mineralization
(sample 05-631/632 with 6.66 ppm Au, 112 ppm Ag and 7.65 percent Cu). The
mineralization is unusual because of very low lead (70 ppm) and zinc (110 ppm)
contents.
Crawford (1913, p.280) described mining activity at the Bon Ton mine on the
ridge between Willow Creek and Green Creek, in the south-central part of the Maysville
quadrangle (SE 1 / 4 , Section 9, T49N, R7E). The property in 1909 consisted of a shaft and
two or more adits on an 8 inch wide vein of sphalerite-pyrite in garnetiferous gneiss.
Activity at the Cinderella mine, about a mile south of the Bon Ton mine (in the Mount
Ouray quadrangle), included a few shallow prospects with galena, Zn-oxides, and Cuoxides
associated with amphibole and garnet (Crawford, 1913, p. 281). Samples from the
main Bon Ton mine adits show some silver and gold associated with copper and zinc
mineralization (samples 05-4 and 05-32 with 0.14 to 1.22 ppm Au, 22 to 41 ppm Ag,
1.36 to 1.61 percent Cu and 0.54 to 12.1 percent Zn).
Observations in the southwestern quadrant of the quadrangle indicate evidence of
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