MINES OF RAVEN AND GUYOT HILLS. 
321 
basalt dike crossed by the lode. This dike, however, could not be found at the time 
of visit, nor was any of the ore visible. The latter is reported to have been partly 
oxidized, containing free gold and tellurides, and to have been worth $35 to $40 per 
ton. No ore has been found on the Ingham lode on the 550-foot Morning Glory 
level, and the lode below this is unexplored. 
The Mattie D. lode is structurally very similar to the Doctor-Jackpot, with an 
even and well-defined hanging wall. Along this hanging wall is usually a few inches 
of brecciated rock indicating some tangential displacement of the walls, although 
the lode does not perceptibly fault the Ingham lode. There are, as a rule, two or 
three other fissures parallel with the hanging-wall fissure, the average width of the 
lode being about 3 feet. Several small pay shoots have been stoped on the Mattie 
D. lode, but no large body of ore. 
The Walter vein, as known in the Doctor-Jackpot mine, has been explored 
chiefly on the 550-foot Morning Glory level, with negative results. It is a rather 
obscure fissure zone cutting the breccia and several phonolitic intrusions. 
The ore in the North Star lode occurred in the altered basalt of the North Star 
dike within 300 feet of the surface and was worked chiefly through the old North 
Star shaft, now abandoned. Its occurrence was described by Penrose." 
Considerable ore has been stoped between the surface and the 550-foot Morr'ng 
Glory level from short pay shoots in the Smith-Reilly lode and in some small associ¬ 
ated cross fissures. This ore is partly oxidized, carrying free gold and tellurides. 
So far as known these pay shoots do not extend to the 700-foot level. 
UNDERGROUND WATER. 
The first water reported in these mines was at a depth of about 600 feet below 
the collar of the Morning Glory shaft, or 9,121 feet above sea level, and was encoun¬ 
tered in 1900. As the Standard tunnel, with its face 9,056 feet above sea level, had 
at this time passed its maximum discharge and as the deeper Mary McKinney mine 
had been actively pumping, the water in the Morning Glory shaft evidently stood 
considerably below its natural local level. The maximum flow was reached at the 
700-foot level (9,021 feet above sea level) in 1901, when the pumps raised 1,890 
gallons per minute. In the summer of 1902 steady pumping had lowered the water 
level 100 feet and pumping, being no longer necessary to keep open the 700-foot 
level, was discontinued. Since then the water has very slowly receded in the sump, 
the rate, according to Mr. V. G. Hills, being 0.03 foot per day. In July, 1903, the 
water in the sump was 2 feet below the 700-foot level. 
mary McKinney mine. 
INTRODUCTION. 
The Mary McKinney mine is situated on the south side of Squaw Gulch, oppo¬ 
site the town of Anaconda. Adjacent mines are the Anaconda and Peggy on the 
north, the Morning Glory and Doctor-Jackpot on the east, and the Katinka and 
Aileen on the south. The property comprises the Mary McKinney, Mary McKinney 
a Sixteenth Ann. Rept. U. S. Geol. Survey, pt. 2, 1895, p. 188. 
