Composition: Uranium oxide
Nomenclature: Named after its dark, massive appearance.
Industrial Uses: Ore of uranium.
Additional Notes: Pitchblende is radioactive due to its uranium content. Pitchblende is an amorphous, impure variety of the mineral uraninite.
Zaire : Scott 1105 : 1 zaire : 13 Feb 1983
Uraninite; pitchblende