A specimen formed by aggregates of interpenetrated calcite rhombohedral crystals showing well defined faces and edges, with a grey color due to the boulangerite inclusions. With some globular siderite aggregates. THE MAIN CRYSTAL IS: 1,1 x 0,6 x 0,3 cm.
ORIGIN: MINA HERJA, CHIUZBAIA, BAIA MARE, MARAMURES, ROMANIA
