“"Herkimer Diamond" Quartz crystals (2 complete and double terminated, one partial) with black bituminous inclusions, associated with Dolomite crystals, iridescent Marcasite and yellow iron-stained Calcite. The Quartz crystals are fluorescent in a blue color under SW and LW UV thanks to the organic inclusions.
SW response is shown
Collected in 1970s by the elder Mr. Labuz from an occurrence on a private property (not the quarry), acquired from "Adirondack Minerals". ”
A. M. - 20th June 2014