Emmonite

Where it forms, where it's found

11recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
38SrStrontium Strontium 1 87.620 87.620
46.68%
8OOxygen Oxygen 3 15.999 47.997
25.57%
20CaCalcium Calcium 1 40.078 40.078
21.35%
6CCarbon Carbon 1 12.011 12.011
6.40%
Total 187.706 100.00%
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
38SrStrontium	Strontium	1	87.620	87.620	46.68%
8OOxygen	Oxygen	3	15.999	47.997	25.57%
20CaCalcium	Calcium	1	40.078	40.078	21.35%
6CCarbon	Carbon	1	12.011	12.011	6.40%
	Total	187.706	100.00%

Synonyms

Calcareo-carbonate of Strontian
Calcian Strontianite
Calciostrontianit
Calcium Strontianite
Emmonit
Emmonita

Literature, links & citation

Citations

1836Thomson (1836) Records of General Science, London: 3: 415.
1888Cathrein, A. (1888) Ueber Calciostrontianit (Emmonit) von Brixlegg. Zeitschrift für Krystallographie, Mineralogie und Petrographie, 14 (1-6). 366-374 doi:10.1524/zkri.1888.14.1.366DOI: 10.1524/zkri.1888.14.1.366
1951Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Emmonite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/emmonite-9096},
  note      = {Accessed 2026-05-11}
}