Ferritungstite (original) (raw)
About FerritungstiteHide
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Name:
In allusion to the composition, containing FERRIc iron (Fe3+), and TUNGSTen.
A variety of Hydrokenoelsmoreite
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 IdentifiersHide
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Mindat ID:
1504 (as Ferritungstite)
27428 (as Hydrokenoelsmoreite)
Long-form identifier:
mindat:1:1:1504:8 (as Ferritungstite)
mindat:1:1:27428:5 (as Hydrokenoelsmoreite)
66cab3ec-1bdb-4568-8a04-a41f9a34c8ac (as Ferritungstite)
46ac720e-8531-4625-a6bf-8d808a6b8200 (as Hydrokenoelsmoreite)
IMA Classification of FerritungstiteHide
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Classification of FerritungstiteHide
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27.4.16
27 : Sulphites, Chromates, Molybdates and Tungstates
4 : Tungstates
Physical Properties of FerritungstiteHide
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Optical Data of FerritungstiteHide
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RI values:
n = 2.09 - 2.15
Birefringence:
Isotropic minerals have no birefringence
Comments:
Anomalously anisotropic.
Crystallography of FerritungstiteHide
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Class (H-M):
m_3_m _(_4/_m_32/m ) - Hexoctahedral
Cell Parameters:
a = 10.352 Å
Unit Cell V:
1,109.36 ų (Calculated from Unit Cell)
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 FerritungstiteHide
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Synonyms of FerritungstiteHide
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Other Language Names for FerritungstiteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Other InformationHide
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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 FerritungstiteHide
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References for FerritungstiteHide
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Reference List:
Localities for FerritungstiteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.