Schubnelite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Schubnelite
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 Identifiers
Mindat ID:
3586
Long-form identifier:
mindat:1:1:3586:2
GUID
(UUID V4):
(UUID V4):
55591bae-a096-4379-9919-a3ff893d211d
IMA Classification of Schubnelite
Approved
IMA Formula:
Fe3+(V5+O4) · H2O
Approval year:
1970
First published:
1970
Classification of Schubnelite
8.CB.35
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
47.3.3.1
47 : VANADIUM OXYSALTS
3 : Hydrated Normal Vanadium Oxysalts
47 : VANADIUM OXYSALTS
3 : Hydrated Normal Vanadium Oxysalts
21.4.22
21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni
21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni
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 |
---|---|---|
Shb | 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 Schubnelite
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 Schubnelite
Type:
Biaxial
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
420nm | 17.3% | 19.5% |
440nm | 15.8% | 18.4% |
460nm | 15.1% | 17.7% |
480nm | 14.7% | 17.3% |
500nm | 14.3% | 16.3% |
520nm | 13.8% | 16.3% |
540nm | 13.4% | 15.8% |
560nm | 13.2% | 15.6% |
580nm | 13.2% | 15.5% |
600nm | 13.0% | 15.6% |
620nm | 12.6% | 15.0% |
640nm | 12.6% | 14.9% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 19.5%.
R1 shown in black, R2 shown in red
Pleochroism:
Visible
Comments:
observable
Chemistry of Schubnelite
Mindat Formula:
Fe3+VO4 · H2O
Elements listed:
Crystallography of Schubnelite
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)°
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 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
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
---|---|---|---|---|---|---|---|
0002221 | Schubnelite | Schindler M, Hawthorne F C (1999) Schubnelite, [Fe(VO4)(H2O)], a novel heteropolyhedral framework mineral American Mineralogist 84 665-668 | 1999 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
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 Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47e : [Vanadates, chromates, manganates] | |
47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Schubnelite
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.
The Natural History Museum, London, England, 1970,149.
National Museum of Natural History, Washington, D.C., USA, 137457.
Associated Minerals at Type Locality:
Reference:
Cesbron, F. (1970) La schubnélite, nouveau vanadate de fer hydraté. Bulletin de la Société Française de Minéralogie et de Cristallographie: 93: 470-475.
Synonyms of Schubnelite
Other Language Names for Schubnelite
Common Associates
Associated Minerals Based on Photo Data:
18 photos of Schubnelite associated with Fervanite | Fe3+4V5+4O16 · 5H2O |
8 photos of Schubnelite associated with Kazakhstanite | Fe3+5V4+3V5+12O39(OH)9 · 9H2O |
6 photos of Schubnelite associated with Opal | SiO2 · nH2O |
2 photos of Schubnelite associated with Francevillite | Ba(UO2)2(VO4)2 · 5H2O |
Related Minerals - Strunz-mindat Grouping
8.CB. | Krupičkaite | Cu6[AsO3(OH)]6 · 8H2O |
8.CB. | Ermeloite | Al(PO4) · H2O |
8.CB.05 | Serrabrancaite | MnPO4 · H2O |
8.CB.10 | Hureaulite | Mn2+5(PO3OH)2(PO4)2 · 4H2O |
8.CB.10 | Villyaellenite | MnMn2Ca2(AsO4)2(HAsO4)2 · 4H2O |
8.CB.10 | UM1997-09-AsO:CaHMgZn | (Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O |
8.CB.10 | Nyholmite | Cd3Zn2(AsO4)2(HAsO4)2 · 4H2O |
8.CB.10 | Miguelromeroite | MnMn2Mn2(AsO4)2(HAsO4)2 · 4H2O |
8.CB.10 | Giftgrubeite | CaMn2Ca2(AsO4)2(AsO3OH)2 · 4H2O |
8.CB.15 | Krautite | Mn(HAsO4) · H2O |
8.CB.20 | Cobaltkoritnigite | Co(AsO3OH) · H2O |
8.CB.20 | Koritnigite | Zn(AsO3OH) · H2O |
8.CB.20 | Magnesiokoritnigite | Mg(AsO3OH) · H2O |
8.CB.25 | Yvonite | Cu(HAsO4) · 2H2O |
8.CB.30 | Geminite | Cu2+(AsO3OH) · H2O |
8.CB.40 | Radovanite | Cu2Fe3+(AsO4)(HAs3+O3)2 · H2O |
8.CB.45 | Kazakhstanite | Fe3+5V4+3V5+12O39(OH)9 · 9H2O |
8.CB.50 | Kolovratite | NixZny(VO4)0.67(x+y) · nH2O |
8.CB.60 | Burgessite | Co2(H2O)4[AsO3(OH)]2(H2O) |
8.CB.60 | Honzaite | Ni2(AsO3OH)2 · 5H2O |
8.CB.65 | Cardite | Zn5.5(AsO4)2(AsO3OH)(OH)3 · 3H2O |
Other Information
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 Schubnelite
mindat.org URL:
https://www.mindat.org/min-3586.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Schubnelite
Reference List:
Cesbron, Fabien (1970) La schubnélite, nouveau vanadate de fer hydraté. Bulletin de Minéralogie, 93 (4) 470-475 doi:10.3406/bulmi.1970.6495
Evans, Howard T., Jr.,, Hughes, John M. (1990) Crystal chemistry of the natural vanadium bronzes. American Mineralogist, 75 (5-6) 508-521
Localities for Schubnelite
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.
Gabon (TL) | |
| Cesbron (1970) +1 other reference |
USA | |
| Haynes (1991) +1 other reference |
| Jensen et al. (1995) |
| Mineralogical Record 26:467 |
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
Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon