Pitchblende

UO2
Also known as
  • Beck-Blände
  • Eisenpecherz
  • Nasturan
  • +8 more
Variety of
Uraninite
UraniniteUO2

Where it forms, where it's found

706recorded occurrences
Source · OpenStreetMap

Radioactivity

Physical

Transparency
Opaque
Colour
Black · Brownish-black

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
92UUraniumUranium1238.029238.029
88.15%
8OOxygenOxygen215.99931.998
11.85%
Total270.027100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From Mindat formula

Synonyms

  • Beck-Blände
  • Eisenpecherz
  • Nasturan
  • Pecblenda
  • Pechblenda
  • Pechblende
  • Pecurano
  • Pezblenda
  • Pseudogalena nigra compacta
  • Swart Blende
  • Uranpecherz

Group, growth & confusion

Often grow together
1 mineral

Literature, links & citation

Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Pitchblende — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/pitchblende-3222},
  note      = {Accessed 2026-05-11}
}