Sphalerite from Elmwood-Mine-Carthage-Tennessee-USA

Lustrous twinned Sphalerite crystal group with one side coated with very small perfect Calcite crystals. Very attractive specimen.
Dimensions: 7.3 x 5.2 x 4.2 cm
Species: Sphalerite, Calcite
Locality: Elmwood-Mine-Carthage-Tennessee-USA