Strontium-bearing Piemontite

Where it forms, where it's found

2recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 13 15.999 207.987
31.63%
38SrStrontium Strontium 2 87.620 175.240
26.65%
14SiSilicon Silicon 3 28.085 84.255
12.81%
20CaCalcium Calcium 2 40.078 80.156
12.19%
25MnManganese Manganese 1 54.938 54.938
8.36%
13AlAluminium Aluminium 2 26.982 53.964
8.21%
1HHydrogen Hydrogen 1 1.008 1.008
0.15%
Total 657.548 100.00%
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	13	15.999	207.987	31.63%
38SrStrontium	Strontium	2	87.620	175.240	26.65%
14SiSilicon	Silicon	3	28.085	84.255	12.81%
20CaCalcium	Calcium	2	40.078	80.156	12.19%
25MnManganese	Manganese	1	54.938	54.938	8.36%
13AlAluminium	Aluminium	2	26.982	53.964	8.21%
1HHydrogen	Hydrogen	1	1.008	1.008	0.15%
	Total	657.548	100.00%

Synonyms

Strontian Piemontite

Literature, links & citation

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Strontium-bearing Piemontite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/strontium-bearing-piemontite-9290},
  note      = {Accessed 2026-05-11}
}