Feroxyhyte
A valid IMA mineral species
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About Feroxyhyte
Formula:
Fe3+O(OH)
Colour:
Yellow-brown, brown
Specific Gravity:
4.20 (Calculated)
Crystal System:
Hexagonal
Name:
From the composition; (ferrum for iron, oxygen, and hydroxyl).
Polymorph of:
Compare vernadite.
Determination is likely exclusively based on a comparison (PXRD pattern and other physical properties) with synthetic material.
Determination is likely exclusively based on a comparison (PXRD pattern and other physical properties) with synthetic material.
Unique Identifiers
Mindat ID:
1484
Long-form identifier:
mindat:1:1:1484:3
GUID
(UUID V4):
(UUID V4):
24ffeb15-4cff-45e6-bafb-043be68686b9
IMA Classification of Feroxyhyte
Approved
Approval year:
1975
Classification of Feroxyhyte
4.FE.40
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
6.1.4.4
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
1 : XO(OH)
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
1 : XO(OH)
7.20.7
7 : Oxides and Hydroxides
20 : Oxides of Fe
7 : Oxides and Hydroxides
20 : Oxides of Fe
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Fox | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Feroxyhyte
Transparency:
Opaque
Colour:
Yellow-brown, brown
Streak:
Yellow
Comment:
not reported
Density:
4.20 g/cm3 (Calculated)
Optical Data of Feroxyhyte
Type:
Uniaxial
Chemistry of Feroxyhyte
Mindat Formula:
Fe3+O(OH)
Elements listed:
Crystallography of Feroxyhyte
Crystal System:
Hexagonal
Cell Parameters:
a = 2.93 Å, c = 4.60 Å
Ratio:
a:c = 1 : 1.57
Unit Cell V:
34.20 ų (Calculated from Unit Cell)
Z:
1
Comment:
Point Group: n.d.; Space Group: n.d
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
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Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
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CIF File Best | x | y | z | a | b | c
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Rotation
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Labels
Console Off | On | Grey | Yellow
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0016639 | Feroxyhyte | Patrat G, de Bergevin F, Pernet M, Joubert J (1983) Structure locale de delta-Fe O O H _cod_database_code 1008762 Acta Crystallographica B39 165-170 | 1983 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.54 Å | (10) |
2.23 Å | (5) |
1.69 Å | (3) |
1.47 Å | (8) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3b: Earth’s earliest hydrosphere | >4.45 |
17 : Marine authigenic Hadean minerals (see also #24) | |
Near-surface Processes | |
24 : Authigenic minerals in terrestrial sediments (see also #17) | |
Stage 5: Initiation of plate tectonics | <3.5-2.5 |
42 : Sea-floor Mn nodules | |
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47h : [Near-surface oxidized, dehydrated minerals] | |
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
48 : Soil leaching zone minerals | <0.6 |
Type Occurrence of Feroxyhyte
General Appearance of Type Material:
Minute, acicular, possibly comprising rolled thin plates; in aggregates with clayey particles.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
Sea-floor Fe–Mn concretions; cement and coatings on clasts in poorly drained soils and sediments of a Eh-low (reduced) character; results from rapid oxidation of Fe2+-bearing compounds.
Associated Minerals at Type Locality:
Reference:
Chukhrov, F.V., Zvyagin, B.B., Gorshkov, A.I., Ermilova, L.P., Korovushkin, V.V., Rudnitskaya, E.S., Yakubovskaya, N.Y. (1976) Feroxyhyte, a new modification of FeO(OH). Izvest. Akad. Nauk SSR, Ser. geol., 5, 5-24 (in Russian).
Synonyms of Feroxyhyte
Other Language Names for Feroxyhyte
Varieties of Feroxyhyte
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Feroxyhyte associated with Phosgenite | Pb2CO3Cl2 |
4 photos of Feroxyhyte associated with Goethite | α-Fe3+O(OH) |
1 photo of Feroxyhyte associated with Baryte | BaSO4 |
1 photo of Feroxyhyte associated with Sulphur | S8 |
1 photo of Feroxyhyte associated with Ferrihydrite | Fe3+10O14(OH)2 |
1 photo of Feroxyhyte associated with Cuprite | Cu2O |
1 photo of Feroxyhyte associated with Nealite | Pb4Fe2+(As3+O3)2Cl4 · 2H2O |
1 photo of Feroxyhyte associated with Calcite | CaCO3 |
1 photo of Feroxyhyte associated with Aragonite | CaCO3 |
Related Minerals - Strunz-mindat Grouping
4.FE.05 | Amakinite | Fe2+(OH)2 |
4.FE.05 | Brucite | Mg(OH)2 |
4.FE.05 | Portlandite | Ca(OH)2 |
4.FE.05 | Pyrochroite | Mn(OH)2 |
4.FE.05 | Theophrastite | Ni(OH)2 |
4.FE.10 | Bayerite | Al(OH)3 |
4.FE.10 | Doyleite | Al(OH)3 |
4.FE.10 | Gibbsite | Al(OH)3 |
4.FE.10 | Nordstrandite | Al(OH)3 |
4.FE.15 | Böhmite | AlO(OH) |
4.FE.15 | Lepidocrocite | γ-Fe3+O(OH) |
4.FE.20 | Grimaldiite | CrO(OH) |
4.FE.20 | Heterogenite | Co3+O(OH) |
4.FE.25 | Feitknechtite | Mn3+O(OH) |
4.FE.25 | Lithiophorite | (Al,Li)MnO2(OH)2 |
4.FE.30 | Quenselite | PbMnO2(OH) |
4.FE.35 | Ferrihydrite | Fe3+10O14(OH)2 |
4.FE.40 | Vernadite | (Mn4+,Fe3+,Ca,Na)(O,OH)2 · nH2O |
4.FE.45 | Quetzalcoatlite | Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y |
4.FE.50 | Fuettererite | Pb3Cu2+6Te6+O6(OH)7Cl5 |
Other Information
Notes:
oxidizes in air to give goethite
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 Feroxyhyte
mindat.org URL:
https://www.mindat.org/min-1484.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Feroxyhyte
Reference List:
Localities for Feroxyhyte
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).
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.
All localities listed without proper references should be considered as questionable.
Arctic Ocean | |
Murdmaa et al. (2000) | |
Pekov (1998) | |
Atlantic Ocean | |
Varentsov et al. (2009, April) | |
| Bogdanov et al. (2008) |
Bogdanov et al. (2008) | |
| Bogdanov et al. (2008) |
Bogdanov et al. (2008) | |
Germany | |
| Walenta (1997) +1 other reference |
Greece | |
| www.rogersminerals.com (n.d.) |
Gelaude et al. (1996) | |
50. +1 other reference | |
Gelaude et al. (1996) | |
Gelaude et al. (1996) | |
Indian Ocean | |
Maciąg et al. (2019) | |
Italy | |
| Muenchener Micromounter - Lithothek. |
| Bonotti et al. (2012) |
Japan | |
| Nambu & Yoshida (1997) |
Nazca Plate | |
Zawadzki et al. (2022) | |
Pacific Ocean | |
| Wegorzewski A.V. (2014) |
| Novikov et al. (2006) |
| Novikov et al. (2023) |
Russia | |
| Glasby et al. (2006) |
| Filimonova et al. (2010) |
| Novgorodova et al. (1995) +1 other reference |
| Glasby et al. (2006) |
South Africa | |
| SAMS (South African Micromount Society) |
Switzerland | |
| Marco Bonifazi |
UK | |
| BMS Newsletter 79 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html) |
| Norman Wilson collection |
Ukraine | |
| Chukhrov F.V. et al. (1987) |
| Pekov (1998) |
Quick NavTopAbout FeroxyhyteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesVarietiesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Vrissaki Point slag locality, Lavrion slag localities, Lavreotiki, East Attica, Attica, Greece