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Calcite

Cumberland Mine, Smith County, Tennessee, USA

Session begins in

July 14, 02:00 PM GMT

Estimate

60,000 - 90,000 USD

Bid

30,000 USD

Lot Details

Description

Calcite

Cumberland Mine, Smith County, Tennessee, USA


14 x 19 x 8 cm (5½ x 7½ x 3⅛ inches). 1,365 grams (3 pounds).

Calcite is among the most diverse and aesthetically versatile mineral species, occurring in an extraordinary range of crystal habits, colors, and sizes. While common as a mineral, exceptional specimens are anything but. The finest examples are prized for their transparency, luster, crystal definition, and visual impact, with certain localities producing specimens that have become benchmarks for the species.


Among these celebrated occurrences is the Cumberland Mine of Smith County, Tennessee. The mine is renowned for producing some of the finest amber-colored calcite crystals ever discovered, often exhibiting remarkable transparency and unusually sharp, twinned forms. These specimens formed within cavities in Mississippian-age limestones, where mineral-rich fluids deposited successive generations of calcite over millions of years. The resulting crystals are distinguished by their warm honey-to-cognac coloration and iconic, twinned habits, qualities that have made Cumberland Mine calcites highly sought after by collectors.


This specimen is a striking example of the locality that consists of intergrown calcite crystals, joined at their longest sides, the crystals have formed a dynamic butterflied formation that highlights their scalenohedral habit. Its golden-orange coloration is consistent through the crystals, while the contrasting matrix accentuates the specimen's sculptural form and gemlike beauty. Elegant, vibrant, and immediately recognizable, this is a classic Tennessee calcite that embodies the beauty for which the Cumberland Mine is famous.