Picrotephroite

Where it forms, where it's found

3recorded occurrences

Source · OpenStreetMap

Physical

Fracture: Conchoidal

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
25MnManganese Manganese 2 54.938 109.876
43.85%
8OOxygen Oxygen 4 15.999 63.996
25.54%
12MgMagnesium Magnesium 2 24.305 48.610
19.40%
14SiSilicon Silicon 1 28.085 28.085
11.21%
Total 250.567 100.00%
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
25MnManganese	Manganese	2	54.938	109.876	43.85%
8OOxygen	Oxygen	4	15.999	63.996	25.54%
12MgMagnesium	Magnesium	2	24.305	48.610	19.40%
14SiSilicon	Silicon	1	28.085	28.085	11.21%
	Total	250.567	100.00%

Synonyms

Picrotephroit
Picrotephroita

Literature, links & citation

Citations

1868Dana, James D., Brush, George Jarvis (1868) A System of Mineralogy (5th ed.). p.882

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Picrotephroite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/picrotephroite-10735},
  note      = {Accessed 2026-05-11}
}