drill core - drill core section from an exploratory copper, zinc and silver mining program
These drill core sections come from an exploratory drilling program conducted at the Ward Mine in Nevada over half a century ago. They illustrate the veining that miners encounter when exploring for mineralized zones and would make an interesting addition to a classroom. An area where mineralization is suspected is drilled and cored to define the zone of ore and to aid in the development of a mining plan.
The Ward Mine is a polymetallic Cu, Au, Ag and Pb-Zn skarn deposit, where the contact between Paleozoic limestone and a quartz monzonite stock and dike swarm has been mineralized.
The mine produced sporadically from 1875 to 1991. Total production is estimated at more than 182 kilotons of ore containing >.05 tons gold, 28 tons silver, 1 kiloton of copper, 7.9 kilotons of lead, and 14.7 kilotons zinc.
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