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. | Mineralogy As A Guide For Exploration In The Montezuma District Central Colorado by Theodore Botinelly, Paperback | Indigo Chapters