Elmwood Honey Calcite Gem Approx 3” long Tons of rainbows! Elmwood Calcite comes from the Elmwood mines in Tennessee. 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.