CALCITE crystals - closed locality - Meckley's Quarry, Mandata, Pennsylvania, USA

Columnar Calcite crystals – fluorescing white LW, white-blue SW, and phosphorescing after SW UV irradiation

from Meckley's Quarry, Mandata, Northumberland County, Pennsylvania, USA

the locality is closed to collecting

ex Franklin Mineral Museum

Measures approximately 2.75 x 2.25 x 1.25 inch, 6.31 oz / 70 x 57 x 32 mm, 179g

this specimen is featured on mindat, minID: 3QW-LXC

Price: 40.00 USD

Item # A0090615

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