Orogrande Mining District — Jarilla Mountains

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Orogrande Mining District — Jarilla Mountains

Gold Mining Site NM • Jarilla Mountains County
Description
NMBGMR mining district DIS129 (Orogrande) — documented placer gold in Jarilla Mountains County, New Mexico. Discovery circa 1899; gold occurs in Tertiary–Holocene alluvial fans, terrace gravels, and stream deposits per NMBGMR.
Historical Notes
McLemore (1994) lists Orogrande among 36 New Mexico mining districts containing placer gold (NMBGMR Resource Map 24, district DIS129). Estimated placer production: roughly 1,700 ounces of placer gold from 1828–1991 statewide context (662,000 oz total NM placer production). Production period: 1879-1966. District cumulative production (all commodities): >$2,000,000. Deposit types: Great Plains margin-iron skarn, Great Plains margin-skarn, placer gold, porphyry copper. Also known as: Brica, Jarilla, Jarilla Mountains, Oro Grande, Silver Hill. 259,000 tons Fe ore produced 1878-1966. ~198,000 tons Fe ore produced from rock piles in 2012. Placer gold occurs as native gold and electrum in incised valleys and alluvial fans. Most economic placers were discovered by 1900; recreational panning may find fine colors — verify land status before prospecting. Coordinates approximate the district centroid from NMBGMR Resource Map 24 GIS (DIS129).
Status / Verification historical_site — Verified

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