This vanadinite is from the J.C. Holmes Mine in Temporal Gulch area, Patagonia, Wrightstone Dist, Santa Rita Mts, Santa Cruz County, Arizona. USA. This area contains several claims containing 31 different minerals including vanadinite. It is a secondary mineral found in the oxidation zones in the lead ore deposits and it contains the elements Pb, V, O and Cl. This specimen consists of a country rock matrix (sawed at the bottom) that is covered on the display side with hexagonal and barrel shaped crystals. Most of the crystals have pyramidal terminations. This piece measures 3 7/16 x 1 11/16 x 1 1/2 inches or 88 x 43 x 38 mm.