Cleveite

Where it forms, where it's found

10recorded occurrences

Source · OpenStreetMap

Radioactivity

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%

Literature, links & citation

Citations

1878Nordenskiöld, A.E. (1878) Mineralogiska bidrag 5. Cleveit, ett nytt yttro-uran mineral från Garta felsspatsbrott nära Arendal [Mineralogical contributions 5. Cleveite, a new yttro-uranium mineral from the Garta felspar quarry near Arendal]. Geologiska Föreningen i Stockholm Förhandlingar, 4 (1) 28-32
1895(1895) Helium, a Constituent of Certain Minerals. Nature, 52 (1343) 306-308 doi:10.1038/052306b0DOI: 10.1038/052306b0
1944Palache, Charles, Berman, Harry, Frondel, Clifford (1944) The System of Mineralogy (7th ed.) Vol. 1 - Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, New York.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Cleveite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/cleveite-29957},
  note      = {Accessed 2026-05-11}
}