Molybdoscheelite

Where it forms, where it's found

19recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
74WTungsten Tungsten 1 183.840 183.840
63.85%
8OOxygen Oxygen 4 15.999 63.996
22.23%
20CaCalcium Calcium 1 40.078 40.078
13.92%
Total 287.914 100.00%
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
74WTungsten	Tungsten	1	183.840	183.840	63.85%
8OOxygen	Oxygen	4	15.999	63.996	22.23%
20CaCalcium	Calcium	1	40.078	40.078	13.92%
	Total	287.914	100.00%

Synonyms

Molybdoan Scheelite
Seyrigite

Literature, links & citation

Citations

1940Lacroix, Alfred (1940) Les gisements de phlogopite de l'Extrême-Sud de Madagascar. Comptes rendus de l’Académie des sciences de Paris, 210 (1) 273-276
1941Strunz (1941) Mineralogische Tabellen: 144.
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.
1989Kempe, U. & Wolf, D. (1989): Entmischungen von Seyrigit in Molybdoscheelit. Chemie der Erde 49, 5-6.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Molybdoscheelite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/molybdoscheelite-26850},
  note      = {Accessed 2026-05-11}
}