Calcite

Set of mineral species, a matrix of iridescent chalcopyrite, one side covered with white dolomite, and the other side covered with pentadodecahedral transparent calcite crystals. and a tiny set of vesuvianite crystals peeking out.

Semi-sphere of white lustrous calcite among scalenohedral calcite crystals covering galena matrix.

Very lustrous pyrite crystals, pyritohedron shape (pentadodecahedron). embedded on white scalenohedral white pointed calcite crystals, on quartz matrix