Pitchblende

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
Element Atoms At. mass g/mol Mass g/mol Mass share
92UUranium Uranium 1 238.029 238.029
88.15%
8OOxygen Oxygen 2 15.999 31.998
11.85%
Total 270.027 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From Mindat formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
92UUranium	Uranium	1	238.029	238.029	88.15%
8OOxygen	Oxygen	2	15.999	31.998	11.85%
	Total	270.027	100.00%

Synonyms

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

Group, growth & confusion

1 mineral

JolliffeiteNiAsSe
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}
}