Sodalite, Feldspar, Natrolite Green - Greenland
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Greenland sodalite with interesting patterning. The LW fluorescence is knock-your-socks-off bright. Green areas are likely natrolite green. There is some magenta fluorescing feldspar.
This material is slightly tenebrescent. Upon exposure to SW UV the sodalite on this piece changes color to a light purple - in seconds! Expose it to a bright white light (UV free halogen or LED spotlight held directly on the rock) and it reverts back to its natural color almost immediately.
Willemite, Calcite, Fluorite from the Garpenberg Mine in Sweden
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.