A wonderfully transparent light yellow twinned scalenohedral calcite crystal. Contacted on the rear and truncated at the base where the crystal was attached to matrix. Some slight rubs near the termination. 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; also Volume 12, Number 1 (1981), page 47, and Volume 27, Number 3 (1996), pages 171-173.