Carrolite on Calcite

Dimensions: 2.3 x 1.8cm
 Origin: Kamoya II mine, Kambove district, Katanga, Rep. Dem. from Congo
 An excellent quality single crystal for this rare sulphide of cobalt, nickel and  copper from Katanga. The octahedron rests on a beautiful crystallization of calcite. (crystal size 10mm)
  Dimensions without the acrylic base, which is supplied with the mineralogical specimen.
 The mineral is not glued to the base  (soft putty).