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Feroxyhyte

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Formula:
Fe3+O(OH)
System:
Hexagonal
Colour:
yellow-brown, brown
Name:
from composition (ferrum for iron, oxygen, and hydroxyl)
Compare vernadite.

Determination is likely exclusively based on a comparison (PXRD pattern and other physical properties) with synthetic material.

Classification of Feroxyhyte

Approved
Approval Year:
1975
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
6.1.4.4

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
1 : XO(OH)
7.20.7

7 : Oxides and Hydroxides
20 : Oxides of Fe
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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:

Physical Properties of Feroxyhyte

Diaphaneity (Transparency):
Opaque
Colour:
yellow-brown, brown
Streak:
yellow
Comment:
not reported
Density:
4.20 g/cm3 (Calculated)

Crystallography of Feroxyhyte

Crystal System:
Hexagonal
Cell Parameters:
a = 2.93Å, c = 4.60Å
Ratio:
a:c = 1 : 1.57
Unit Cell Volume:
V 34.20 ų (Calculated from Unit Cell)
Z:
1
X-Ray Powder Diffraction Data:
d-spacingIntensity
2.54 (10)
2.23 (5)
1.69 (3)
1.47 (8)

Optical Data of Feroxyhyte

Type:
Uniaxial

Chemical Properties of Feroxyhyte

Formula:
Fe3+O(OH)
All elements listed in formula:

Relationship of Feroxyhyte to other Species

4.FE.05Amakinite(Fe2+,Mg)(OH)2
4.FE.05BruciteMg(OH)2
4.FE.05PortlanditeCa(OH)2
4.FE.05PyrochroiteMn(OH)2
4.FE.05TheophrastiteNi(OH)2
4.FE.10BayeriteAl(OH)3
4.FE.10DoyleiteAl(OH)3
4.FE.10GibbsiteAl(OH)3
4.FE.10NordstranditeAl(OH)3
4.FE.15BöhmiteAlO(OH)
4.FE.15Lepidocrociteγ-Fe3+O(OH)
4.FE.20GrimaldiiteCrO(OH)
4.FE.20HeterogeniteCo3+O(OH)
4.FE.25FeitknechtiteMn3+O(OH)
4.FE.25Lithiophorite(Al,Li)MnO2(OH)2
4.FE.30QuenselitePbMnO2(OH)
4.FE.35FerrihydriteFe103+O14(OH)2
4.FE.40Vernadite(Mn4+,Fe3+,Ca,Na)(O,OH)2 · nH2O
4.FE.45QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
7.20.1WüstiteFeO
7.20.2MagnetiteFe2+Fe23+O4
7.20.3MaghemiteFe23+O3
7.20.4HematiteFe2O3
7.20.5Goethiteα-Fe3+O(OH)
7.20.6Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O
7.20.8Lepidocrociteγ-Fe3+O(OH)
7.20.9FerrihydriteFe103+O14(OH)2
7.20.10Amakinite(Fe2+,Mg)(OH)2
7.20.11MagnesioferriteMgFe23+O4
7.20.12MuskoxiteMg7Fe4O13 · 10H2O
7.20.13SrebrodolskiteCa2Fe23+O5
7.20.14HercyniteFe2+Al2O4
7.20.15BrownmilleriteCa2(Al,Fe3+)2O5

Other Names for Feroxyhyte

Name in Other Languages:
Simplified Chinese:六方纤铁矿
Spanish:Feroxygita

Other Information

Other Information:
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.

References for Feroxyhyte

Reference List:
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).

Fleischer, M., Pabst, A., Mandarino, J.A., Chao, G.Y. (1977) New Mineral Names. American Mineralogist, 62, 1057-1061.

Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C., Eds. Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. http://www.handbookofmineralogy.org/ (2016)

Internet Links for Feroxyhyte

Localities for Feroxyhyte

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Arctic Ocean
 
Murdmaa, I.O., Bogdanova, O.Y., Gorshkov, A.I., Novikov, G.V. and Shevchenko, V.P. (2000): Lithology and Mineral Resources 35(6), 594-597.
Atlantic Ocean
 
Varentsov, I. M., Drits, V. A., & GORSCHKOV, A. (2009, April). Mineralogy, geochemistry and genesis of manganese-iron crusts on the Bezymiannaya Seamount 640, Cape Verde Plate, Atlantic. In Sediment-Hosted Mineral Deposits: Proceedings of a Symposium Held in Beijing, People's Republic of China, 30 July-4 August 1988 (pp. 89-107). Blackwell Publishing Ltd..
  • Mid-Atlantic Ridge complex
Bogdanov, Y.A., Vikent’ev, I.V., Lein, A.Y., Bogdanova, O.Y., Sagalevich, A.M., and Sivtsov, A.V. (2008): Geology of Ore Deposits 50(2), 119-134.
Bogdanov, Y.A., Vikent’ev, I.V., Lein, A.Y., Bogdanova, O.Y., Sagalevich, A.M., and Sivtsov, A.V. (2008): Geology of Ore Deposits 50(2), 119-134.
    • Snake Pit hydrothermal field
Bogdanov, Y.A., Vikent’ev, I.V., Lein, A.Y., Bogdanova, O.Y., Sagalevich, A.M., and Sivtsov, A.V. (2008): Geology of Ore Deposits 50(2), 119-134.
Bogdanov, Y.A., Vikent’ev, I.V., Lein, A.Y., Bogdanova, O.Y., Sagalevich, A.M., and Sivtsov, A.V. (2008): Geology of Ore Deposits 50(2), 119-134.
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
WALENTA, K. (1997): Neue Mineralfunde von der Grube Clara 7. Folge. - Lapis 22 (11), 37-47; WALENTA, K. (2001): Wolframhaltiger Feroxyhit von der Grube Clara im mittleren Schwarzwald. Aufschluss 52, 51-56.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District slag localities
        • Passa Limani area
Schnorrer-Köhler, G., Standfuss, K. & Standfuss, L. (1985): Neue Schlackenmineralien von Lavrion. Lapis, 10 (5), 13-16; 50.
        • Sounion area
http://www.rogersminerals.com/viewInfo?id=27091
Laurion The minerals in the ancient slags by Piet Gelaude etc.
        • Thorikos area
Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
        • Vrissaki area
Gelaude, Piet, van Kalmthout, Piet, and Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
Italy
 
  • Tuscany
    • Livorno Province
      • Piombino
Muenchener Micromounter - Lithothek
Japan
 
  • Honshu Island
    • Tohoku Region
      • Iwate Prefecture
        • Kuji City
          • Yamagata
Nambu & Yoshida (1997) Ganko-Gakkai Kou'en-Youshi, 161.
Pacific Ocean
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
  • Clarion-Clipperton zone
    • Clipperton Island (Ile de Clipperton; Ile de la Passion)
      • USA-4
Wegorzewski A.V., Kuhn T. (2014): The influence of suboxic diagenesis on the formation of manganese nodules in the Clarion Clipperton nodule belt of the Pacific Ocean. Marine Geology, 357, 123-138.
  • East Pacific Rise
    • Juan de Fuca Ridge complex
Novikov, G.V., Vikent’ev, I.V., and Bogdanova, O.Y. (2006): Geology of Ore Deposits 48(4), 304-325.
Russia
 
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
UK
 
  • England
    • Cornwall
      • St Agnes District
        • Crantock
BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
    • Cumbria
      • City of Carlisle District
        • Tindale (Tindale Fell)
Norman Wilson collection
Ukraine
 
  • Crimea Oblast'
    • Crimea peninsula
Chukhrov F.V., Gorshkov A.I., Berezovskaya V.V., Sivtsov A.V. (1987) New data on mineralogy of Kerch ores, - Izvestiya AN SSSR, ser. geol., 4, p. 60-77 (in Rus.)
  • Ivano-Frankivs'k Oblast' (Ivanovo-Frankovsk Oblast')
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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