Pure Potential Mine, Silver District, Trigo Mts., La Paz Co., Arizona

22.4 x 6.4 x 7.3 cm

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A rather large specimen with one surface covered with small, well formed, hexagonal, Vanadinite crystals which are an attractive red/orange color. The underlying matrix is composed in large part of fluorescent Fluorite and Calcite. Under LW, the Fluorite fluoresces a vivid blue. Under SW, the Calcite fluoresce a vivid red/orange and the Fluorite fluoresces blue, but not as strongly as under LW. The big surprise was the thin layer of micro Calcite crystals, barely visible in ordinary light, which had grown on the surfaces of the Vanadinite crystals fluoresces green under SW, likely due to traces of uranium. There is one small area which fluoresces off white in color; it is unclear what this might be, although fluorescent Willemite is aloes found at the location.

Condition: Good

Flaws: Some of the Vanadinite crystals are incomplete.

This mineral is also found in the following galleries: Minerals From Arizona | Phosphates | Fluorite | Calcite | Fluorescents | Minerals Priced Between 100 and 199 Dollars