Mineral resources of the Doña Ana mountains mining district, Doña Ana County, New Mexico
— V.T. McLemore

A small amount of copper and approximately 100 ounces of gold and 5000 ounces of silver worth approximately $5000 have been produced from the Doña Ana Mountains mining district from volcanic-epithermal vein deposits discovered about 1900. These deposits are associated with the Doña Ana caldera, which formed at about 36 Ma. Some of New Mexico’s largest gold and silver deposits are volcanic-epithermal vein deposits. Marble and tactite outcrops are locally common in the Doña Ana Mountains, suggesting potential for lead-zinc and gold skarn and/or carbonate-hosted replacement deposits at depth. The presence of volcanic-epithermal veins and mineralized marble in the Doña Ana Mountains mining district indicates that additional exploration is needed, even though the caldera is a relatively small hydrothermal system.