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Ferberite

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Dr. Moritz Rudolph Ferber
Formula:
FeWO4
Colour:
Black; dark brown in transmitted light
Lustre:
Adamantine, Metallic, Sub-Metallic
Hardness:
4 - 4½
Specific Gravity:
7.58
Crystal System:
Monoclinic
Name:
For Dr. Moritz Rudolph Ferber (1805-1875), amateur mineralogist, Gera, Germany.
Ferberite-Hübnerite Series.

Occurs in high-temperature hydrothermal veins, greisens, and granitic pegmatites; in alluvial and eluvial deposits.

In a unique situation ferberite may (experimentally) precipitate from volcanic fumarole gas, at temperature around 450oC (Africano et al., 2002).


Classification of Ferberite

Approved, 'Grandfathered' (first described prior to 1959)
4.DB.30

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
B : With medium-sized cations; chains of edge-sharing octahedra
48.1.1.2

48 : ANHYDROUS MOLYBDATES AND TUNGSTATES
1 : AXO4
27.4.14

27 : Sulphites, Chromates, Molybdates and Tungstates
4 : Tungstates

Physical Properties of Ferberite

Adamantine, Metallic, Sub-Metallic
Transparency:
Opaque
Colour:
Black; dark brown in transmitted light
Streak:
Brownish black to black
Hardness:
4 - 4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {010}
Parting:
On {100} and {102}
Fracture:
Irregular/Uneven
Density:
7.58 g/cm3 (Measured)    7.6 g/cm3 (Calculated)

Optical Data of Ferberite

Type:
Biaxial (+)
RI values:
nα = 2.255 nβ = 2.305 nγ = 2.414
2V:
Measured: 66° , Calculated: 72°
Birefringence:
Weak
Max Birefringence:
δ = 0.159
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Type:
Anisotropic
Anisotropism:
Distinct
Dispersion:
r > v extreme
Colour in reflected light:
Gray to white
Internal Reflections:
Deep brownish red (less bright than Hübnerite)

Chemical Properties of Ferberite

Formula:
FeWO4
IMA Formula:
Fe2+WO4
Common Impurities:
Nb,Ta,Sc,Sn

Crystallography of Ferberite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/b
Cell Parameters:
a = 4.72 Å, b = 5.70 Å, c = 4.96 Å
β = 90°
Ratio:
a:b:c = 0.828 : 1 : 0.87
Unit Cell V:
133.44 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals wedge-shaped, commonly flattened {100} and elongated [010] or, less commonly, along [001]. Crystal faces striated parallel {001} or {010}; as groups of bladed crystals; less often short prismatic [001] and flattened {100}. Massive.
Twinning:
Common with twin plane {100}, rarely {001}; simple contact twins with composition face (100) or, rarely (001); interpenetrant (simulating Carlsbad twins in orthoclase) or lamellar (very rare). Twin plane {023}, common, usually as simple contact twins, rarely as repeated twins or interpenetrating.

X-Ray Powder Diffraction

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Type Occurrence of Ferberite

Synonyms of Ferberite

Other Language Names for Ferberite

Dutch:Ferberiet
Italian:Ferberite
Japanese:鉄重石
Simplified Chinese:钨铁矿
Slovak:Ferberit
Spanish:Ferberita

Varieties of Ferberite

Reinite

Ferberite pseudomorph after scheelite.

Relationship of Ferberite to other Species

Other Members of this group:
HeftetjerniteScTaO4
HuanzalaiteMgWO4
HübneriteMnWO4
Rossovskyite(Fe3+,Ta)(Nb,Ti)O4
Sanmartinite(Zn,Fe)WO4
Forms a series with:

Common Associates

FluoriteCaF2
HematiteFe2O3
MarcasiteFeS2
PyriteFeS2
ScheeliteCa(WO4)
TopazAl2(SiO4)(F,OH)2
Associated Minerals Based on Photo Data:
Quartz405 photos of Ferberite associated with Quartz on mindat.org.
Siderite178 photos of Ferberite associated with Siderite on mindat.org.
Fluorite151 photos of Ferberite associated with Fluorite on mindat.org.
Muscovite132 photos of Ferberite associated with Muscovite on mindat.org.
Arsenopyrite125 photos of Ferberite associated with Arsenopyrite on mindat.org.
Calcite72 photos of Ferberite associated with Calcite on mindat.org.
Pyrite61 photos of Ferberite associated with Pyrite on mindat.org.
Scheelite59 photos of Ferberite associated with Scheelite on mindat.org.
Fluorapatite58 photos of Ferberite associated with Fluorapatite on mindat.org.
Chalcopyrite48 photos of Ferberite associated with Chalcopyrite on mindat.org.

Related Minerals - Nickel-Strunz Grouping

4.DB.05ArgutiteGeO2
4.DB.05CassiteriteSnO2
4.DB.05PlattneritePbO2
4.DB.05PyrolusiteMnO2
4.DB.05RutileTiO2
4.DB.05TripuhyiteFe3+Sb5+O4
4.DB.05TugarinoviteMoO2
4.DB.05Varlamoffite(Sn,Fe)(O,OH)2
4.DB.10ByströmiteMgSb2O6
4.DB.10Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
4.DB.10Tapiolite-(Mn)(Mn,Fe)(Ta,Nb)2O6
4.DB.10OrdoñeziteZnSb2O6
4.DB.15bAkhtenskiteε-Mn4+O2
4.DB.15cNsutite(Mn4+,Mn2+)(O,OH)2
4.DB.15aParamontroseiteV4+O2
4.DB.15aRamsdelliteMn4+O2
4.DB.20Scrutinyiteα-PbO2
4.DB.25IshikawaiteU4+Fe2+Nb2O8
4.DB.25Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8
4.DB.25Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
4.DB.25SrilankiteZrTi2O6
4.DB.25Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8
4.DB.25Calciosamarskite(Ca,Fe3+,Y)2(Nb,Ta,Ti)2O8
4.DB.25Samarskite-(Yb)(Yb,Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
4.DB.30HübneriteMnWO4
4.DB.30Sanmartinite(Zn,Fe)WO4
4.DB.30KrasnoselskiteCoWO4
4.DB.30HeftetjerniteScTaO4
4.DB.30HuanzalaiteMgWO4
4.DB.35Columbite-(Fe)FeNb2O6
4.DB.35Tantalite-(Fe)FeTa2O6
4.DB.35Columbite-(Mn)(Mn,Fe)(Nb,Ta)2O6
4.DB.35Tantalite-(Mn)MnTa2O6
4.DB.35Columbite-(Mg)(Mg,Fe,Mn)(Nb,Ta)2O6
4.DB.35Qitianlingite(Fe,Mn)2(Nb,Ta)2WO10
4.DB.35Magnocolumbite(Mg,Fe,Mn)(Nb,Ta)2O6
4.DB.35Tantalite-(Mg)(Mg,Fe2+)(Ta,Nb)2O6
4.DB.40FerrowodginiteFe2+Sn4+Ta2O8
4.DB.40LithiotantiteLiTa3O8
4.DB.40LithiowodginiteLiTa3O8
4.DB.40TitanowodginiteMn2+TiTa2O8
4.DB.40WodginiteMn2+Sn4+Ta2O8
4.DB.40FerrotitanowodginiteFe2+TiTa2O8
4.DB.40WolframowodginiteMn(Mn,Sn,Fe,Ta)(W,Ta,Nb)2O8
4.DB.45TivaniteV3+TiO3(OH)
4.DB.50Carmichaelite(Ti,Cr,Fe)[O2-x(OH)x]
4.DB.55AlumotantiteAlTaO4
4.DB.60Biehlite((Sb,As)O)2[MoO4]

Related Minerals - Hey's Chemical Index of Minerals Grouping

27.4.1CuprotungstiteCu2(WO4)(OH)2
27.4.2ScheeliteCa(WO4)
27.4.4AnthoiniteAlWO3(OH)3
27.4.5MpororoiteWAlO3(OH)3 · 2(H2O)
27.4.6Yttrotungstite-(Y)YW2O6(OH)3
27.4.7Yttrotungstite-(Ce)(Ce,Nd,Y)W2O6(OH)3
27.4.8StolzitePb(WO4)
27.4.9RaspitePb(WO4)
27.4.10RusselliteBi2WO6
27.4.11PinalitePb3WO5Cl2
27.4.12Uranotungstite(Fe2+,Ba,Pb)(UO2)2(WO4)(OH)4 · 12H2O
27.4.13HübneriteMnWO4
27.4.15Wolframite(Fe2+)WO4 to (Mn2+)WO4
27.4.16Ferritungstite2W2O6(H2O)
27.4.17Phyllotungstite(H2O,M)x(W,Fe)(O,OH)3 · yH2O (M = Ca, Cs, Pb or K)
27.4.18Qitianlingite(Fe,Mn)2(Nb,Ta)2WO10

Related Minerals - Dana Grouping (8th Ed.)

48.1.1.1HübneriteMnWO4
48.1.1.3Sanmartinite(Zn,Fe)WO4

Other Information

Notes:
Slightly magnetic. Decomposed by aqua regia with the separation of tungstic oxide.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:
Ore of tungsten.

References for Ferberite

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
NOTE: See also: Wolframite references.
Kerndt (1847) Journal für praktische Chemie, Leipzig: 42: 81.
Liebe (1863) Jb. Min.: 641 (as Ferberit).
Weisbach, Albin (1875) Synopsis mineralogical, systematische Übersicht des Mineralreiches. 78 pp., Freiberg: 43 (as Ferrowolframit).
Fritsch (1878) Zeitschrift für Naturwissenschaften, Halle: 3: 864 (as Reinit [Reinite]).
Luedecke (1879) Jb. Min.: 286.
Chernik (1899) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 31: 513.
Wada (1904) Minerals of Japan: 76 (Kodera analysis).
Wherry (1914) Proceedings of the U.S. National Museum: 47: 501.
Geijer (1923) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 45: 434.
Wilson (1941) Arizona Bureau of Mines, Gelogy Series, Bull. 148.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 1064-1072.
Cid-Dresdner, H. and C. Escobar (1968) The crystal structure of ferberite, FeWO4. Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig, 127, 61–72.
Ülkü, D. (1967) Untersuchungen zur Kristallstruktur und magnetischen Struktur des Ferberits FeWO4. Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig, 124, 192–219 (in German with English abstract).
Mineralogical Record (1977): 8: 393.
Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (2003) Handbook of Mineralogy, Volume V. Borates, Carbonates, Sulfates. Mineral Data Publishing, Tucson, AZ, 813pp.: 220.
Simon Goldmann, Frank Melcher, Hans-Eike Gäbler, Stijn Dewaele, Friso De Clercq and Philippe Muchez (2013): Mineralogy and Trace Element Chemistry of Ferberite/Reinite from Tungsten Deposits in Central Rwanda. Minerals 3(2), 121-144.
Africano, F., Van Rompaey, G., Bernard, A., Le Guern, F. (2002): Deposition of trace elements from high temperature gases of Satsuma-Iwojima volcano. Earth Planets Space: 54: 275-286

Internet Links for Ferberite

mindat.org URL:
https://www.mindat.org/min-1476.html
Please feel free to link to this page.
Specimens:
The following Ferberite specimens are currently listed for sale on minfind.com.

Localities for Ferberite

Mineral and/or Locality  
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