40 CONTRIBUTIONS TO ECONOMIC GEOLOOY, 1902. [bull. 213. 
to the bedding. In the last the ore contains copper and gold, with 
or without lead and silver, and forms in irregular masses, pockets, 
lenses, and pencils in metamorphic limestones adjacent to intrusive 
bodies. Gold values appear to run highest in certain fractures in 
quartzite; zinc is reported to increase in the southwestern extension 
of the great fissure zone of the camp, and copper is said to reach its 
maximum in amount and value in the deeper portions of certain 
pseudo-fissures in quartzites. 
Present activity. — During the last year mining in this district has 
been remarkably active. Forty-eight new locations, the largest num- 
ber reported from any mining district in the State, have been recorded. 
A number of heavily capitalized companies have been incorporated, 
several deep shafts begun, and exploration work vigorously pros- 
ecuted in various quarters. Precisely what the results will be no 
one can foresee. Several pieces of virgin ground which are now 
being explored have been selected with considerable judgment. In 
a mining boom, however, some properties are inevitably overvalued, 
and it can not be expected that all will prove equally profitable. Nat- 
urally among the conservative men who have developed the present 
district by legitimate mining there is a strong feeling of opposition to 
anything in the nature of booming, which might be prejudicial to the 
permanent prosperity of the camp. In brief, it may be said that if 
no serious decline in the price of silver occurs the prospects for a con- 
tinued increase in the earnings of the camp through legitimate mining 
in the immediate future are most favorable. 
