Barite on Calcite from Elk Creek DX474 elk creek under a long wave UV

under a long wave UV light (shown in the last photo)

The siderite gives a wonderful contrast to the quartz with its muted grey and brown color

There is one small spot of damage on the front of the crystal

Quartz pseudomorphs after danburite are particularly prized by collectors because they illustrate the sequential growth and mineral replacement processes within the mine’s complex pegmatite and hydrothermal systems

Smoky quartz has been used historically for decorative and utilitarian purposes

Barite on Calcite from Elk Creek DX474 elk creek under a long wave UVBarite on Calcite from Elk Creek Approx. Dimensions: 3. 25x2. 5x1. 25 inches Approx. Weight: 136 grams Locality: Elk Creek, Meade County, South Dakota Elk Creek, South Dakota, is world renowned for producing some of the finest gem quality barite crystals, often found on a contrasting matrix of yellow fluorescent calcite. These specimens are highly sought after by collectors for their intense amber, honey, or "root beer" coloration and exceptional