MINES ON NORTH SLOPE OF IRONCLAD HILL. 
289 
northeast of the Jackson shaft. Some ore was mined in 1903 from the so-called 
contact vein, but in the early part of 1904 a very rich shoot was found in the 
W. P. H. vein, from which during that year a total amount of 8315,000 is reported 
to have been produced. 
The shaft was 245 feet deep when visited, with about 200 feet of drifts on that 
level, corresponding to the 300-foot level in the Jerry Johnson. It is sunk in 
schist, and a short crosscut leads to the contact with the breccia, which dips 40° 
WSW. Some good ore is found on this important contact vein, which continues 
south-southeast to the Damon mine. Both free gold and tellurides occurred, the 
latter in places being contained in fresh schistose rock, in which they have evidently 
formed by replacement. Values are said to be cut off by a flat vein 12 feet below 
the level. The crosscut then continues west for 75 feet, and near the W. P. II. 
strikes a flat vein dipping 20° N., which contains no values, but faults the W. P. H. 
about 6 feet. The latter is twisted, but soon regains its old strike. Irregular values 
began near the flat vein, but gave out. Thirty feet south, on the W. P. IT. vein, a 
small seam with free gold was noted in the hanging wall and immediately led 
into a rich pocket about 20 feet long, 8 feet thick, and extending for 18 feet along 
the dip of the vein above and below the level. It is believed to form part of a nar¬ 
row shoot with northerly pitch. Above the level the values are probably cut off 
by a flat seam, as happened in the Jerry Johnson mine. Many tons of the ore from 
this pocket yielded at the rate of from $1,000 to $6,000 per ton. 
The ore consists of massive and in places silicified breccia ; it contains no fluo¬ 
rite and few large quartz seams. In the main it is oxidized, but tellurides are 
sometimes found, as well as a little galena and zinc blende, but no copper minerals. 
The tellurides in some instances occur directly in fragments of schist and granite 
and have then undoubtedly been formed by direct replacement. The rare minerals 
emmonsite and tellurite, the former a hydrated tellurite of iron, the latter tellu¬ 
rium dioxide, occurred in this rich mass. The ore is very poor in silver, even the 
richest parts rarely containing more than a few ounces to the ton. 
DAMON MINE. 
The Damon mine, which belongs to the Woods Investment Company, com¬ 
prises claims situated a few hundred feet southeast of the Jerry Johnson mine. 
The total production is stated to be over $200,000. Lessees took out $145,000 
between December, 1898, and May, 1901. The developments consist of the Jerry 
Johnson incline, the Damon incline, 270 feet deep, and the Damon vertical shaft, 
500 feet deep. The latter is situated 150 feet northwest of the Damon incline. 
Drifts and crosscuts amount to 3,000 or 4,000 feet. 
The principal country rock is a dense phonolitic breccia. The contact with 
the schist is frequently reached in the workings, but the latter do not extend into 
the schist. 
There are two fairly persistent veins; one of them follows the breccia-schist 
contact, while the other lies parallel to this contact, from 10 to 25 feet to the west 
of it. Besides these two there are a large number of flat veins with dips of from 
10° to 50° in various directions, and which really carried the larger part of the ore. 
