Arizona has many historical mining properties that have produced gold, fluorspar, vanadium and uranium. These minerals have proven vital to many industries during times of war and peace.
The state also has iron ore deposits found in its central parts, including the banded-iron formation northwest of Prescott composed of quartz-hematite-magnetite rock formed from oxygenated ocean water 1.7 billion years ago.
Located on the western side of Agua Fria Canyon 4 miles east of Bumblebee, the Richinbar Mine operated sporadically from 1905 to 1922 under multiple companies with a total of $60,000 in low-grade gold ore produced. Geologically the vein crops out in granite at the edge of a basaltic mesa, with the gold ore occurring in irregular vertical shoots in coarse massive quartz. The mine included a 20-stamp mill and was developed with a vertical shaft 480 feet deep.
Twenty years later, argentiferous galena ore was mined and shipped at profit, which became the trend during the mine’s sporadic ownership, development and production over the decades. This included a small concentrating plant and an experimental cyanide heap leach operation that economically failed to recover silver from the mine’s lead-silver ore.
Vanadium is a metal in Arizona that occurs as vanadinite, a chloro-vanadate of lead formed by the oxidation of lead sulfides in sedimentary rocks. Several uses of vanadium include its application as an alloy in the steel industry and its use in renewable energy in vanadium flow batteries as energy storage.
Arthur L. Flagg served as the consulting engineer to the Gallagher Vanadium and Rare Metals Corp., stating the deposit hosted the greatest variety of vanadium minerals in the Southwest. Consisting of 22 claims with considerable drifting, production from 1929 to 1953 was minimal, including 670 tons of lead ore shipped to the El Paso Smelter for refinement. Although an onsite mill was never built, it was recommended due to the large amount of milling ore surrounding the main vein.
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