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Huge specimen of minor phlogopite, calcite, scapolite (marialite), hauyne or perhaps massive afghanite.
Lots of areas appear to be homogeneous blends of minerals. For example, under SW the bluish fluorescence in the lower left appears to be perhaps diopside, or possibly gonnardite. But under LW the blue fluorescence disappears and is replaced by dark orange from what is likely hauyne.
Under MW a large area of dull blue/white fluorescence towards the upper left.
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.
