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Fluorescent Calcite from the Badger State

This is a single, colorless calcite crystal from one of the lead mines that used to operate in Shullsburg, Wisconsin. Under UV, this specimen shows a subtle, but beautiful, multi-wavelength fluorescent response under all wavelengths. It also shows brief phosphorescence, strongest following short wave. The size of this specimen is 50.6 x 47.0 x 27.4 mm, and it weighs 71 grams.

Wisconsin’s nickname, “The Badger State,” has its origin in the lead mining that occurred in the Shullsburg area during the 1820’s. The lead miners came to be known as “Badgers” due to the numerous shallow pits and holes they dug in search of ore.

The photo montage above shows the multi-wavelength, multi-colored fluorescent response of this calcite crystal from the Badger State.

Under short wave UB (254 nm), pastel orange fluorescence is seen.

As shown above, pink fluorescence is seen under mid wave UV (302 nm).

A peach-colored fluorescent response is seen under long wave UV (365 nm).

Same specimen shown under visible light.

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