MINES OF RAVEN AND GUYOT HILLS. 
347 
MARY ANN MINE. 
This mine is located near the north end of the Mary Ann claim, near the Joe 
Dandy mine, northeast of the summit of Raven Hill. The property is owned by 
the Mary Ann Mining Company. The production could not be learned, but it is 
very small. The development consists of a shaft 275 feet deep and three levels 
representing S00 to 1,000 feet of drifting and crosscutting. Breccia is the only 
rock encountered in the mine. 
The Mary Ann vein as seen on the first level just east of the shaft has a direc¬ 
tion N. 5° E. and dips 75° to 80° E. It is 3 to 4 feet wide, and consists of a series 
of approximately parallel oxidized seams, some of which carry kaolin. Thirty feet 
south of the shaft it is cut by an oxidized flat vein striking N. 30° W. and dipping 
about 35° NE. It is a much-sheeted, considerabty oxidized zone, 8 to 12 inches 
wide. Along the intersection of these two veins a stope 15 feet long and 5 feet 
wide has been carried up for 25 feet on $30 ore holding rusty gold. A drift along 
the flat vein is being pushed to the southeast with the intention of striking the 
crossing of a vein approximately parallel with the Mary Ann vein and farther to 
the east. 
On level 2 the Mary Ann vein is not very well defined. Sixty feet north of 
the shaft it is crossed by a 3-inch vertical oxidized vein, but no ore was found. 
A drift 15 feet to the east along the cross vein reaches a series of partially oxidized 
seams forming a vein 2 feet wide, which runs N. 5° W. and dips 80° W. At this 
point a flat vein also crosses which corresponds in position and direction to the 
ore-carrying flat vein on the level above. At this triple intersection a stope 10 by 
5 by 20 feet high has been worked. 
About 60 feet west of the shaft on level 2 a vertical 2-inch seam striking N. 
75° W. is cut by a flat vein 6 inches wide striking N. 65° E. and dipping 4° NW. 
Both these veins are simply sheared oxidized zones in the breccia. At their junc¬ 
tion a few tons of 2-ounce ore were taken from a stope, mainly above the flat vein, 
15 feet long, 5 feet wide, and 10 feet high. 
MOHAWK BELLE MINE. 
The Mohawk Belle claim is situated at the head of the northern branch of 
Eclipse Gulch, between Bull and Raven hills. The west end of the claim is being 
worked through a shaft 120 feet deep. Three or four hundred feet of drifting and 
crosscutting have been done from the bottom. An east-west vein dipping 70° N. 
is hems: drifted on and has furnished a small bunch of ore at the surface. 
The east end of the claim was worked some years ago and the Lottie vein, 
which was discovered on the Lottie claim, to the south, produced about $100,000. 
The ore was very rich in rusty gold, some shipments being reported to have yielded 
from $3,000 to $13,000 per ton. 
IDA MAY MINE. 
The Ida May property, located on the summit of Raven Hill and consisting of 
the Ida May, Little Clara, and Mountain Girl claims, is owned by the Ida May 
Gold Mining Company. The production up to 1900 was over $40,000. ° There are 
a Hills, Fred, Official Manual of the Cripple Creek District, 1900. 
