Calcite - Franklin, New Jersey
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Nicely fluorescent under midwave and shortwave, from the world famous Buckwheat Dump. This piece displays brief intense phosphorescence, as does all manganese active calcites. Striking under midwave UV and very unusual.
Brief intense phosphorescence, or ÒBIPÓ, is a phenomenon where for a brief moment immediately after the shortwave lamp is turned off, it displays a very short-lived, but bright phosphorescence or flash. ItÕs very difficult to capture this in the photos."