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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.
"The Garpenberg mine is located in Bergslagen, a very old mining area in the southern part of Sweden.
The mine is very active today and is one of Europe's most progressive underground mining operations. Collecting is not possible, and the few specimens that reach collector's hands are highly prized. The mineralogy is quite similar to that of Franklin NJ.
