Green Phosphorescent Fluorite from a Limited Occurrence in Bedford, Indiana


Cubic yellow fluorite crystals on limestone matrix, collected in 2016 from a roadcut in Bedford, Indiana.  This fluorite shows a very interesting fluorescent/phosphorescent response.  Under short wave UV, the cubes fluoresce a bright off-white color, with white phosphorescence.  The fluorescent response under long wave UV is a similar bright white, but with green phosphorescence.  The largest crystal in these photographs (right of center) measures approximately 6.5 x 5.0 mm.


The fluorite occurrence from which this specimen was collected was confined to a relatively limited area of about 40 yards in length, between knee and head height.  Other fluorite specimens were found at this location that showed similar fluorescence, but a markedly different phosphorescent response- blue after short wave UV, but with no visible phosphorescence after long wave UV (see the separate post for an example of this material).

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