Calcite, Sphalerite – Elmwood Mine, Tennessee, USA
 An impressive and aesthetically pleasing collection of calcite and sphalerite on matrix. The calcite is transparent throughout with beautiful, intensely colored zones. The Elmwood Mine near Carthage, Tennessee, is one of those localities that immediately evokes associations with a superb mineral type in collectors. In this case, scalenohedral twin calcite with its distinctive golden-cognac appearance and highly lustrous sphalerite.