3.2" Double Terminated Calcite w/ Cubic Galena and Dolomite - Missouri

This is a stunning, 3.2" wide mineral association that features a relatively large, double terminated yellow calcite, cubic galena, and iridescent chalcopyrite crystals, all on a rhombohedral dolomite crystal encrusted matrix. This mineral cluster was collected from the Sweetwater Mine in Reynolds County, Missouri, a site known for its stunning mineral associations.

It has been mounted to an acrylic display base with hot glue for an aesthetic display of each side.

About Calcite Crystals

Calcite crystals are a form of calcium carbonate (CaCO₃) known for their diverse shapes, transparency, and vibrant range of colors. They typically form in rhombohedral, scalenohedral, or prismatic shapes, often with well-defined, sharp edges and glossy surfaces. Calcite crystals are often translucent or transparent, sometimes displaying a double refraction effect where objects viewed through the crystal appear doubled. They can appear in various colors—white, clear, yellow, pink, blue, green, and orange—depending on impurities or trace minerals.

A notable characteristic of calcite is its reaction with weak acids like vinegar, which causes it to effervesce, or fizz, as it releases carbon dioxide. This property makes calcite crystals a key tool in geological identification and studies. Calcite forms in many environments, from sedimentary rocks like limestone and marble to hydrothermal veins.

Galena is a lead-based mineral and the primary ore of lead, and has been used for its lead content for thousands of years. Galena typically displays a gray metallic luster and forms cubes or octahedral crystals. The chemical composition of galena is PbS.

While galena will not pose a health hazard by sitting on the shelf or even from casual handling, we suggest washing hands following handling due to the mineral's lead content.
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DETAILS
SPECIES
Calcite, Galena, Chalcopyrite & Dolomite
LOCATION
Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri
SIZE
Entire specimen: 3.2 x 1.9"
CATEGORY
ITEM
#252148