Crystal Prospect

fluorescent FLUORITE - Cave-in-Rock, Illinois, USA

Blue Fluorite crystals (a rare color for the locality), some with purple coloration, in association with small golden Chalcopyrite crystals on the Fluorite, on white Calcite.

Fluorite fluoresces deep blue LW and pale-blue SW, Calcite fluoresces in gentle shades of red, and organic inclusions add a yellow color.

ex Grace and Kennard Borden #490, ex Morris Museum

from Cave-in-Rock area, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin County, Illinois, USA

Measures approximately 5 x 3 x 2.5 inch, 2 lbs 10.26 oz / 127 x 76 x 63 mm, 1197g

Price: 3000.00 USD

Item # A0611214

To show the fluorescent response the specimen was illuminated using 6 watt 254nm (Short Wave) / 366nm (Long Wave) UVGL-58 lamp (you need a proper UV light source to observe the fluorescence, more powerful lamp = brighter response).