|
<br />G E O L O G Y,
<br />~ There is no good geological survey oP the district,
<br />The country rock is that oP a gneissic, or banded
<br />granite, cut by a.syetem oP Pissure veins, having a strike
<br />ranging Prom N,E, and S,SR, on the ,one hand, and N.~P, and
<br />B,E, on the other,
<br />'' Several porphyry dykes cut through the mountain,
<br />having a general northerly strike, Plhat ePPects the dykes
<br />may have upon the ore deposition, remain to be determined,
<br />ORES AIdD ORE BODIES,
<br />The ores, which consist principally oP galena
<br />and sphalerite, occur in ore shoots in Pissure veins,
<br />The vein Pilling is a quartzose and Feldspathic
<br />mlRtnre. imnrarnatad ,.~;+7, ~ ..: ~...._ ti___..
<br />. •--~------ .._-.. •• ~~~.~,. uaaring galena and
<br />sphalerite, associated with solid streaks oP the latter,
<br />varying in vridth Prom a Pew inches,'to several Peet,
<br />The galena and sphalerite, vrhich occur in the
<br />sclid streaks, are shipped directly to their respective
<br />Reduction S'lorka, vrhile all of the other ore (low grade)
<br />is treated in the concentrator, separating the lead and
<br />zinc Prom the gangue, the lead and zinc concentrates,
<br />going to the smelters, as stated above,
<br />Veins,
<br />The Seven Thirty vein, has a strike oP N, 830
<br />~ `vest. and digs tc the S,E. at an angle of `7`9°~ its width
<br />varying Prom a seam, to 7 Pt „ with a general average
<br />is .
<br />width eP 3 Ft,
<br />The Eagle Bird-Biamarek vein, has a strike oF.S.
<br />570 E' dipping to the N. E, at an angle oP 700, Zts
<br />.width varys Prom 30, to 250 Pt, with an average width
<br />oP 50 Ft,
<br />The Dives-Pelican vein, has a strike oP N. 830 N,
<br />
|