Black (translucent dark red-amber when edge-lit) lustrous cluster of sphalerite crystals to 22 mm, on drusy white rhombic dolomite crystals. No damage on the front (display) side, but contacting on back side of specimen. Very nice example for the species and location. A good summary of mining in this area can be found in the Mineralogical Record, Volume 9, Number 4 (July – August, 1978), pages 213 – 218.