Calcite From Elmwood Mine Tennessee- Collectors Piece, Statement PieceCalcite From Elmwood Mine Tennessee Collectors Piece, Statement Piece Weight 45g Size 4cm by 3cm Thickness 3. 5cm Calcite is a rock forming mineral with a chemical formula of CaCO3. It is widespread and found throughout the world in sedimentary, metamorphic, and igneous rocks. Calcite is a powerful cleanser and is good to have around you because it can clear stagnant energies from any environment. It also removes sick or stagnant energies from within