Geology and mineral occurrences of the mineral districts of Hidalgo County, southern New Mexico
— Virginia T. McLemore and Wolf E. Elston

Value of metallic mineral production from 15 districts in Hidalgo County is estimated as $65 million during 1875-1994 (not including the Hidalgo smelter output or aggregate production). The majority of past metal production came from the Lordsburg district, which is the 5th largest gold-producing district and 3rd largest silver-producing district in New Mexico. Deposit types found in the county include Laramide polymetallic veins, slams, and carbonate-hosted Pb-Zn replacements, as well as epithermal manganese, volcanicepithermal vein, porphyry copper, and placer gold deposits. Only aggregates are being mined in the county currently.