Brazil fluorescent minerals

      The specimens shown at right are from The Castelihno Mine, Rio Grande de Sul, Brazil.  The crystal portion of the specimens is calcite and has a clear to milky appearance (on a white to light tan matrix) in normal light.   The specimen (light colored matrix) is reflecting the long wave ultraviolet light, in the middle image.  The crystals in the middle image are fluorescing a light lavender to pink.  The photos at the far right show a red-orange fluorescence under short wave ultraviolet light.

Regular lighting

Regular lighting

Long wave ultraviolet light

Long wave ultraviolet light

Short wave ultraviolet light

Short wave ultraviolet light