Mineralogy as a guide for exploration in the Montezuma District, central Colorado

The Montezuma district of central Colorado is a small base metal-silver
mining district containing vein deposits associated with a Tertairy porphyry
stock. The distribution of tetrahedrite having large unit-cell edges correlates
in part with the distribution of more productive mines and suggests areas
favorable for further production. The abundance of galena and sphalerite in
veins, but not of pyrite, also correlates with the distribution of the more
productive mines.