Thalliumpharmacosiderite

Where it forms, where it's found

Type locality: Crven Dol
Allchar
Ržanovo
Kavadarci Municipality
North Macedonia
41.1596°, 21.9529°

2recorded occurrences

Source · OpenStreetMap

Safety & handling

Crystallography

Crystal system: Isometric
Space group: F-4 3m
Cell parameters: a = 7.987(8) Å
Comment: Synthetic material has space group P-43m (Karasalihović et al., 2021), with a = 7.9645(1) Å.

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 20 15.999 319.980
32.50%
33AsArsenic Arsenic 3 74.922 224.766
22.83%
26FeIron Iron 4 55.845 223.380
22.68%
81TlThallium Thallium 1 204.380 204.380
20.76%
1HHydrogen Hydrogen 12 1.008 12.096
1.23%
Total 984.602 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From IMA formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
8OOxygen	Oxygen	20	15.999	319.980	32.50%
33AsArsenic	Arsenic	3	74.922	224.766	22.83%
26FeIron	Iron	4	55.845	223.380	22.68%
81TlThallium	Thallium	1	204.380	204.380	20.76%
1HHydrogen	Hydrogen	12	1.008	12.096	1.23%
	Total	984.602	100.00%

Synonyms

IMA2013-124
Thalliumpharmacosideriet

In other languages

German: IMA 2013-124 · Thalliumpharmakosiderit
Italian: thalliumpharmacosiderite

Classification

Strunz

10th ed.

8.DK.10

8Phosphates, Arsenates, VanadatesClass
8.DPhosphates, etc. with additional anions, with H₂ODivision
8.DKWith large and medium-sized cations, (OH, etc.):RO₄ > 1:1 and < 2:1Group
8.DK.10ThalliumpharmacosideriteSpecies

Group, growth & confusion

7 members

Literature, links & citation

Citations

—Đorđević, T., Karasalihović, T., Stöger-Pollach, M., Karanović, L: (2023): Tl(I) sequestration by pharmacosiderite supergroup arsenates: synthesis, crystal structures and relationships in Tl(I)–M(III)–As(V)–H2O (M = Al, Fe) system. Mineralogy and Petrology, 117, 325–343.
2014Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) New minerals and nomenclature modifications approved in 2014, CNMNC Newsletter No 20. Mineralogical Magazine, 78 (3) 549-558 doi:10.1180/minmag.2014.078.3.05DOI: 10.1180/minmag.2014.078.3.05
2021Karasalihović, T., Karanović, Lj., Ðorđević, T. (2021): Synthesis and crystal structure of thalliumpharmacosiderite. Poster, MinPet 2021, Vienna, Austria, September 19-21, 2021; abstract in Mitt. Österr. Mineral. Ges. 167, 112.
2022(2022) Thalliumpharmacosiderite. Handbook of Mineralogy. Mineralogical Society of America
2023Đorđević, Tamara, Karasalihović, Tarik, Stöger-Pollach, Michael, Karanović, Ljiljana (2023) Tl(I) sequestration by pharmacosiderite supergroup arsenates: synthesis, crystal structures and relationships in Tl(I)–M(III)–As(V)–H2O (M = Al, Fe) system. Mineralogy and Petrology, 117 (2) 325-343 doi:10.1007/s00710-023-00823-4DOI: 10.1007/s00710-023-00823-4

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Thalliumpharmacosiderite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/thalliumpharmacosiderite-46085},
  note      = {Accessed 2026-05-11}
}