Old Yuma Mine vanadinites compare favorably with the best United States vanadinites, including the Apache and North Geronimo (Pure Potential) Mines. And Old Yuma vanadinites are less common. Lustrous, brick-red, hexagonal vanadinite barrels to 4 mm are richly and attractively scattered on the sculptural, mounded matrix of lustrous calcite rhombs on this classic combination specimen. The knob is complete-all-around and pristine. Ex. Jaime Bird Collection and probably dates to the 1960s or 1970s.