fluorescent WITHERITE crystals - Minerva No 1, Cave-in-Rock, Hardin County, Illinois, USA

Witherite crystals in association with Calcite, violet and blue (a rare color for the locality) Fluorite, and traces of orange Sphalerite in matrix. Witherite fluoresces bright cream-white under SW and LW UV, Fluorite fluoresces blue LW.

Minerva has produced world class Witherite specimens

ex Dr Howard Heitner

from Minerva No. 1 Mine (Ozark-Mahoning No. 1 Mine), Ozark-Mahoning Group, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin County, Illinois, USA

Measures approximately 3.5 x 2.5 x 2 inch, 1 lb 2.34 oz / 89 x 63 x 51 mm, 520g

this specimen is featured on mindat, minID: XKA-911

Item # A0561214

personal collection

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).

Crystal Prospect