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Schubnelite

A valid IMA mineral species
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08520310017271926458856.jpg
Schubnelite, etc.

Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
02962400017271926491564.jpg
Schubnelite

Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
03481800017271926533285.jpg
Schubnelite, etc.

Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
08520310017271926458856.jpg
Schubnelite, etc.

Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
02962400017271926491564.jpg
Schubnelite

Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
03481800017271926533285.jpg
Schubnelite, etc.

Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
08520310017271926458856.jpg
Schubnelite, etc.

Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
02962400017271926491564.jpg
Schubnelite

Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
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About SchubneliteHide

00813070017271926592161.jpg
Henri J. Schubnel
Formula:
Fe3+VO4 · H2O
Colour:
Brilliant black, splinters are transparent yellowish- to greenish-brown
Specific Gravity:
3.28 - 3.29
Crystal System:
Triclinic
Name:
Named in 1970 by Fabien P. Cesbron in honor of Henri-Jean Schubnel (30 January 1935, Nice, France - ), French mineralogist and curator of the Muséum national d'Histoire Naturelle, Paris, France. He wrote many books on gems and minerals.
Structurally related to mikehowardite: both bear edge-sharing dimers of Fe3+O6 octahedra, linked by distorted VO4 tetrahedra.


Unique IdentifiersHide

Mindat ID:
3586
Long-form identifier:
mindat:1:1:3586:2

IMA Classification of SchubneliteHide

IMA status:
Approved
IMA Formula:
Fe3+(V5+O4) · H2O
Approval year:
1970
First published:
1970
Type description reference:
Cesbron, Fabien (1970) La schubnélite, nouveau vanadate de fer hydraté. Bulletin de Minéralogie, 93 (4) 470-475 doi:10.3406/bulmi.1970.6495

Classification of SchubneliteHide

Strunz-mindat (2025):
8.CB.35

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
Dana 8th ed.:
47.3.3.1

47 : VANADIUM OXYSALTS
3 : Hydrated Normal Vanadium Oxysalts
Hey's CIM Ref.:
21.4.22

21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
ShbIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of SchubneliteHide

Transparency:
Translucent
Comment:
Brilliant
Colour:
Brilliant black, splinters are transparent yellowish- to greenish-brown
Density:
3.28 - 3.29 g/cm3 (Measured)    3.29 g/cm3 (Calculated)

Optical Data of SchubneliteHide

Type:
Biaxial
Reflectivity:
WavelengthR1 (%)R2 (%)
420nm17.3%19.5%
440nm15.8%18.4%
460nm15.1%17.7%
480nm14.7%17.3%
500nm14.3%16.3%
520nm13.8%16.3%
540nm13.4%15.8%
560nm13.2%15.6%
580nm13.2%15.5%
600nm13.0%15.6%
620nm12.6%15.0%
640nm12.6%14.9%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 19.5%.
R1 shown in black, R2 shown in red
Pleochroism:
Visible
Comments:
observable

Chemistry of SchubneliteHide

Mindat Formula:
Fe3+VO4 · H2O
Element Weights:
Element% weight
O42.371 %
Fe29.579 %
V26.982 %
H1.068 %

Calculated from ideal end-member formula.
Elements listed:
Fe, H, O, V - search for minerals with similar chemistry

Crystallography of SchubneliteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.466(1) Å, b = 5.675(2) Å, c = 6.610(1) Å
α = 101.02(1)°, β = 95.10(1)°, γ = 107.32(1)°
Ratio:
a:b:c = 0.963 : 1 : 1.165
Unit Cell V:
189.79 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Elongated on [001]. Forms include {010}, {100} and {001}.
Twinning:
Twinned on {212}.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0002221SchubneliteSchindler M, Hawthorne F C (1999) Schubnelite, [Fe(VO4)(H2O)], a novel heteropolyhedral framework mineral American Mineralogist 84 665-66819990293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.47 Å(very very strong)
3.21 Å(very very strong)
5.15 Å(very strong)
3.19 Å(very strong)
6.41 Å(strong)
3.07 Å(strong)
2.68 Å(medium strong)

Geological EnvironmentHide

Type Occurrence of SchubneliteHide

Type Locality:
ⓘ Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon
Place of Conservation of Type Material:
National School of Mines, Paris, France.
The Natural History Museum, London, England, 1970,149.
National Museum of Natural History, Washington, D.C., USA, 137457.
Associated Minerals at Type Locality:
FervaniteGoethite
Reference:
Cesbron, Fabien (1970) La schubnélite, nouveau vanadate de fer hydraté. Bulletin de Minéralogie, 93 (4) 470-475 doi:10.3406/bulmi.1970.6495

Synonyms of SchubneliteHide

Other Language Names for SchubneliteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
18 photos of Schubnelite associated with FervaniteFe3+4V5+4O16 · 5H2O
8 photos of Schubnelite associated with KazakhstaniteFe3+5V4+3V5+12O39(OH)9 · 9H2O
6 photos of Schubnelite associated with OpalSiO2 · nH2O
1 photo of Schubnelite associated with FrancevilliteBa(UO2)2(VO4)2 · 5H2O

Related Minerals - Strunz-mindat GroupingHide

8.CB.KrupičkaiteCu6[AsO3(OH)]6 · 8H2OMon. 2/m : P21/b
8.CB.05ErmeloiteAl(PO4) · H2OMon. 2/m : B2/b
8.CB.05SerrabrancaiteMnPO4 · H2OMon. 2/m : B2/b
8.CB.10NyholmiteCd3Zn2(AsO3OH)2(AsO4)2 · 4H2OMon. 2/m : B2/b
8.CB.10Villyaellenite(Mn,Ca)Mn2Ca2(AsO3OH)2(AsO4)2 · 4H2OMon. 2/m : B2/b
8.CB.10GiftgrubeiteCaMn2Ca2(AsO4)2(AsO3OH)2 · 4H2OMon. 2/m : B2/b
8.CB.10HureauliteMn2+5(PO3OH)2(PO4)2 · 4H2OMon. 2/m : B2/b
8.CB.10MiguelromeroiteMn2+5(AsO3OH)2(AsO4)2(H2O)4Mon. 2/m : B2/b
8.CB.10UM1997-09-AsO:CaHMgZn(Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2OMon.
8.CB.15KrautiteMn(HAsO4) · H2OMon. 2 : P21
8.CB.20CobaltkoritnigiteCo(AsO3OH) · H2OTric. 1 : P1
8.CB.20MagnesiokoritnigiteMg(AsO3OH) · H2OTric. 1 : P1
8.CB.20KoritnigiteZn(AsO3OH) · H2OTric. 1 : P1
8.CB.25YvoniteCu(HAsO4) · 2H2OTric. 1 : P1
8.CB.30GeminiteCu2+(AsO3OH) · H2OTric. 1 : P1
8.CB.40RadovaniteCu2Fe3+(AsO4)(HAs3+O3)2 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.CB.45KazakhstaniteFe3+5V4+3V5+12O39(OH)9 · 9H2OMon.
8.CB.50KolovratiteNixZny(VO4)0.67(x+y) · nH2O
8.CB.60HonzaiteNi2(AsO3OH)2 · 5H2OMon. 2/m : P21/m
8.CB.60BurgessiteCo2(H2O)4[AsO3(OH)]2(H2O)Mon. 2/m
8.CB.65CarditeZn5.5(AsO4)2(AsO3OH)(OH)3 · 3H2OOrth. mmm (2/m 2/m 2/m) : Cmcm

Other InformationHide

Notes:
Magnetic
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 SchubneliteHide

References for SchubneliteHide

Localities for SchubneliteHide

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

- 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.
Gabon (TL)
 
  • Haut-Ogooué Province
    • Léboumbi-Leyou Department
      • Mounana
Cesbron (1970) +1 other reference
Spain
 
  • Canary Islands
    • Santa Cruz de Tenerife Province
      • Tenerife
        • Arona
Dill et al. (2023)
Dill et al. (2023)
USA
 
  • Arizona
    • Apache County
      • Cane Valley Mining District
        • Yazzie Mesa
          • Monument No. 2 channel
Haynes (1991) +1 other reference
  • Nevada
    • Eureka County
      • Carlin Trend
        • Maggie Creek Mining Subdistrict
Jensen et al. (1995)
      • Lynn Mining District
        • Elko
Jensen et al. (1995)
Quick NavTopAbout SchubneliteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
 
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