Caesium Beryl

Where it forms, where it's found

Type locality: Norway
Oxford County
Maine
USA

4recorded occurrences

Source · OpenStreetMap

Safety & handling

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 18 15.999 287.982
53.58%
14SiSilicon Silicon 6 28.085 168.510
31.35%
13AlAluminium Aluminium 2 26.982 53.964
10.04%
4BeBeryllium Beryllium 3 9.012 27.036
5.03%
Total 537.492 100.00%
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
8OOxygen	Oxygen	18	15.999	287.982	53.58%
14SiSilicon	Silicon	6	28.085	168.510	31.35%
13AlAluminium	Aluminium	2	26.982	53.964	10.04%
4BeBeryllium	Beryllium	3	9.012	27.036	5.03%
	Total	537.492	100.00%

Synonyms

Béryl césifière
Cäsiumberyll

Literature, links & citation

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Caesium Beryl — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/caesium-beryl-6545},
  note      = {Accessed 2026-05-11}
}