13.5" Giant Twinned Calcite Crystals - Elmwood Mine

This is a large, cabinet sized display specimen of giant twinned calcite crystals on dolostone from the famous Elmwood Mine in Tennessee. The largest calcite crystal is 7.9" long and the entire piece is 13.5x9.5x6" and weighs 19 lbs. The calcite has a nice lustrous appearance, and the largest crystal has a translucent, golden coloration. There are some Sphalerite inclusions within the calcite. From the Mark Gottlieb collection.

The Elmwood Mine is a zinc mine in Carthage, Tennessee which opened in 1969, before being closed for many years, only to be reopened in 2010. It has produced many world class specimens of Fluorite, Calcite, Barite and Galena over the years. Specimens used to be plentiful as miners were allowed to recover specimens, but collecting is strictly prohibited by the new mine owners. They've gone to great lengths to prevent the mining of specimens, including blasting crystal pockets or filling them with slurry.

Shalerite ((Zn,Fe)S) is a mineral that is the chief ore of zinc while Galena is a primary ore for lead.
Calcite on Dolostone
Elmwood Mine, Carthage, Tennessee
Largest crystal 7.9", Specimen 13.5x9.5x6"