Fluorescent Minerals
Caliche and hydrozincite, shortwave UV. 6"x6"x4" (Pima County)
Yellow fluorescent caliche over light blue calcite crystals. 6"x3"x3" (Pima County)
Side view of the same rock, yellow over blue.
Four color specimen, red, blue, green and yellow. 3"x2"x1" (Pima County)
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