CALCITE MANGANOAN, CHALCOPYRITE, QUARTZ, SPHALERITE

A specimen totally covered by brilliant quartz hyaline cristals. Between them, some very bright twinned chalcopyrite crystals accompanied by sphalerite. A group of doubly terminated manganoan calcite makes this sample even more interesting. Fluorescence UVC & UVA. THE MAIN CRYSTAL IS: 2,2 x 1,4 x 1,2 cm.