This specimen consists of scalenohedral Manganoan Calcite crystals with a soft pink hue which are associated with minor brownish-black Sphalerite. The Calcite is translucent when backlit and the overall aesthetics of the piece make it a very good display specimen of this truly classic San Juan material. The Idarado mine is most famous for it's Manganoan Calcite specimens. In fact, the largest quantity of the finest quality Manganoan Calcite specimens from Colorado were found in this mine. Ex. Richard Kosnar Collection.