Ferritungstite
A variety of Hydrokenoelsmoreite
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About Ferritungstite
Formula:
◻2(W,Fe3+)2(O,OH)6(H2O)
Lustre:
Vitreous
Crystal System:
Isometric
Name:
In allusion to the composition, containing FERRIc iron (Fe3+), and TUNGSTen.
First Recorded Locality:
Previously considered to be an independent species, with the formula (K,Ca,Na)(W6+,Fe3+)2(O,OH)6.H2O (partial replacement of W6+ by Fe3+ charge-balanced by introduction of K+, Ca2+ and Na+ in voids of the structure), but later recognised to be only a ferric iron-rich variety of hydrokenoelsmoreite.
Unique Identifiers
Mindat ID:
1504 (as Ferritungstite)
27428 (as Hydrokenoelsmoreite)
27428 (as Hydrokenoelsmoreite)
Long-form identifier:
mindat:1:1:1504:8 (as Ferritungstite)
mindat:1:1:27428:5 (as Hydrokenoelsmoreite)
mindat:1:1:27428:5 (as Hydrokenoelsmoreite)
Similar Names
| Ferrotungstate | A synonym of Ferberite |
IMA Classification of Ferritungstite
Discredited
Classification of Ferritungstite
27.4.16
27 : Sulphites, Chromates, Molybdates and Tungstates
4 : Tungstates
27 : Sulphites, Chromates, Molybdates and Tungstates
4 : Tungstates
Physical Properties of Ferritungstite
Vitreous
Transparency:
Translucent
Optical Data of Ferritungstite
Type:
Isotropic
RI values:
n = 2.09 - 2.15
Surface Relief:
Very High
Comments:
Anomalously anisotropic.
Chemistry of Ferritungstite
Mindat Formula:
◻2(W,Fe3+)2(O,OH)6(H2O)
Elements listed:
Crystallography of Ferritungstite
Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Space Group:
Fd3m
Cell Parameters:
a = 10.352 Å
Unit Cell V:
1,109.36 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Crystals minute octahedra; as rosettes, in aggregates; earthy crusts; fibrous.
Twinning:
Penetration twins and platy, six-sided, cyclic twins, according to the spinel law.
First Recorded Occurrence of Ferritungstite
Synonyms of Ferritungstite
Other Language Names for Ferritungstite
Common Associates
Associations Based on Photo Data:
| 5 photos of Ferritungstite associated with Wolframite Group | |
| 4 photos of Ferritungstite associated with Quartz | SiO2 |
| 3 photos of Ferritungstite associated with Ferberite | FeWO4 |
| 3 photos of Ferritungstite associated with Anthoinite | AlWO3(OH)3 |
| 2 photos of Ferritungstite associated with Jarosite | KFe3+3(SO4)2(OH)6 |
| 2 photos of Ferritungstite associated with Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| 2 photos of Ferritungstite associated with Molybdenite | MoS2 |
| 1 photo of Ferritungstite associated with Goethite | Fe3+O(OH) |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Ferritungstite
mindat.org URL:
https://www.mindat.org/min-1504.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Ferritungstite
Reference List:
Schaller, W. T. (1912) Ferritungstit, ein neues Mineral. Zeitschrift für Kristallographie, 50 (1-6). 112-113 doi:10.1524/zkri.1912.50.1.112
Larsen, Esper S. (1921) The microscopic determination of the nonopaque minerals. Bulletin 679. US Geological Survey doi:10.3133/b679 p.74
Richter, D. H., Reichen, Laura E., Lemmon, and D. M. (1957) New data on ferritungstite from Nevada. American Mineralogist, 42 (1-2) 83-90
Localities for Ferritungstite
Showing 51 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Fernández et al. (Ed. E.O. Zappettini) |
| Kittl (1939) +1 other reference |
Australia | |
| Rankin et al. (2002) |
| Bottrill et al. (2008) |
| Ryan Eagle field observation |
| Simpson (1928) |
| Simpson et al. (1948) +1 other reference |
Canada | |
| Peatfield (n.d.) |
| Ercit et al. (1994) +2 other references | |
Czech Republic | |
| Losertová et al. (2014) |
France | |
| Ansermet et al. (2010) |
| Queneau (n.d.) |
| Bariand et al. (n.d.) +1 other reference |
Germany | |
| Weiß (2001) |
| Gerstenberg (n.d.) |
Italy | |
| Piccoli et al. (2007) |
| Orlandi et al. (2005) +1 other reference |
| Vanini et al. (2008) |
| Stara et al. (1996) |
| Brizzi G. et al. (1989) | |
| Brizzi et al. (1994) |
| Stara et al. (1996) | |
| Stara et al. (1996) | |
Japan | |
| ... +1 other reference |
| MORIMITSU et al. (2021) |
| SHIROSE et al. (2011) +1 other reference |
| Tsunoda & Shimizu (1995) |
Kazakhstan | |
| Jermolenko (2002) |
| Evseev (1995) |
Portugal | |
| Alves (n.d.) |
| Gomes et al. (2010) |
| Sahama (1981) +1 other reference |
Russia | |
| Stuart Mills |
Rwanda | |
| Jedwab et al. (1979) +1 other reference |
| Bernard et al. (2004) +3 other references |
Spain | |
| Bocamina (Grupo Mineralogista de Madrid) |
Thailand | |
| Dill et al. (2008) |
Uganda | |
| - (1977, November) |
| Elmar Lackner specimen | |
| J. W. Anthony et al.: "Handbook of Mineralogy" (1997) |
| v. Knorring et al. (1972) +1 other reference | |
UK | |
| Golley et al. (1995) |
| Wolf Minerals |
USA | |
| Eckel et al. (1997) |
| Reported by Dick Schooner (not analyzed?) |
| Graf (1947) +1 other reference |
| Castor et al. (2004) |
| Castor et al. (2004) |
| Ross (1961) |
| Bernard et al. (2004) |
| Bernard et al. (2004) |
Hingston Down Quarry, Gunnislake, Calstock, Cornwall, England, UK