The Hamburg Mine and Vicinity, Yuma County, Arizona
From the The Mineralogical Record, Volume 11, No. 3.2, May-June, 1980: “Brilliant, transparent crystals of vanadinite with an unsurpassed, deep red color have been found since the late 1800’s at the Hamburg mine, Yuma County, Arizona. Although sometimes overshadowed by the nearby Red Cloud mine, this old Dana locality still produces some of Arizona’s finest vanadinite in crystals from micromount size to more than a centimeter.” Continue Reading