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Schoderite

A valid IMA mineral species
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About SchoderiteHide

Formula:
Al2(PO4)(VO4) · 8H2O
Colour:
Bright yellow-orange
Hardness:
2
Specific Gravity:
1.92
Crystal System:
Monoclinic
Name:
Named after William Paul Schoder (1900-1977) research chemist, Union Carbide Nuclear Company, for his outstanding contributions to the metallurgy of vanadium.
May dehydrate to metaschoderite.


Unique IdentifiersHide

Mindat ID:
3572
Long-form identifier:
mindat:1:1:3572:5
GUID
(UUID V4):
583ee80a-df0a-453b-86cd-9bc91a71e063

IMA Classification of SchoderiteHide

Classification of SchoderiteHide

8.CE.70

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
43.3.1.1

43 : COMPOUND PHOSPHATES, ETC.
3 : Hydrated Normal Compound Phosphates, etc·
21.3.4

21 : Vanadates (and vanadates with arsenate or phosphate)
3 : Vanadates of Al, rare earths, Pb, V or Bi

Mineral SymbolsHide

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

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

Physical Properties of SchoderiteHide

Transparency:
Translucent
Colour:
Bright yellow-orange
Hardness:
Cleavage:
Perfect
{010}
Density:
1.92(2) g/cm3 (Measured)    1.931 g/cm3 (Calculated)

Optical Data of SchoderiteHide

Type:
Biaxial (-)
RI values:
nα = 1.560(1) nβ = 1.563(1) nγ = 1.565(1)
2V:
Measured: 42° (3), Calculated: 78°
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none
Pleochroism:
Weak
Comments:
X = pale yellow; Y = deep yellow; Z = yellow.

Chemistry of SchoderiteHide

Mindat Formula:
Al2(PO4)(VO4) · 8H2O

Crystallography of SchoderiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 16.26(1) Å, b = 30.60(4) Å, c = 12.55(1) Å
β = 91.77(8)°
Ratio:
a:b:c = 0.531 : 1 : 0.41
Unit Cell V:
6,241.35 ų (Calculated from Unit Cell)
Z:
18
Morphology:
Arkansas: {100}, {001}, {101}, {101}, {203}
Comment:
Point Group: 2/m or 2.; Space Group: P21/m or P21.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
16.3 Å(100)
15.3 Å(70)
7.64 Å(35)
5.686 Å(25)
5.410 Å(25)
2.893 Å(35)
2.843 Å(25)

Geological EnvironmentHide

Type Occurrence of SchoderiteHide

General Appearance of Type Material:
Yellowish orange mineral resembling variscite in samples of phosphatic chert.
Place of Conservation of Type Material:
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 145791, 144479.
Geological Setting of Type Material:
Vanadium phosphate deposit
Associated Minerals at Type Locality:
Reference:
Hausen, D.M. (1962) Schoderite, a new phosphovanadate mineral from Nevada. American Mineralogist: 47: 637-648.

Other Language Names for SchoderiteHide

German:Schoderit
Spanish:Schoderita

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Schoderite associated with VanoxiteV4+4V5+2O13 · 8H2O
1 photo of Schoderite associated with MetaschoderiteAl2(PO4)(VO4) · 6H2O
1 photo of Schoderite associated with VashegyiteAl11(PO4)9(OH)6 · 38H2O

Related Minerals - Strunz-mindat GroupingHide

8.CE.XBabánekiteCu3(AsO4)2 · 8H2O Mon. 2/m : B2/m
8.CE.MonteneroiteCu2+Mn2+2(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.05Chudobaite(Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2OTric. 1 : P1
8.CE.05GeigeriteMn2+5(AsO4)2(HAsO4)2 · 10H2OTric. 1 : P1
8.CE.10NewberyiteMg(PO3OH) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CE.15BrassiteMg(HAsO4) · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CE.20PhosphorrössleriteMg(PO3OH) · 7H2OMon. 2/m : P2/b
8.CE.20RössleriteMg(HAsO4) · 7H2OMon. 2/m : B2/b
8.CE.25MetaswitzeriteMn2+3(PO4)2 · 4H2OMon. 2/m : P2/b
8.CE.25SwitzeriteMn2+3(PO4)2 · 7H2OMon. 2/m : P21/b
8.CE.30LindackeriteCuCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30OndrušiteCaCu4(AsO4)2(HAsO4)2 · 10H2OTric. 1 : P1
8.CE.30VeselovskýiteZnCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30PradetiteCoCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30KlajiteMnCu4(AsO4)2(HAsO4)2 · 9-10H2OTric. 1 : P1
8.CE.30Hloušekite(Ni,Co)Cu4(AsO4)2(AsO3OH)2 · 9H2OTric. 1 : P1
8.CE.35BobierriteMg3(PO4)2 · 8H2OMon. 2/m : B2/b
8.CE.40AnnabergiteNi3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40ArupiteNi3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40ErythriteCo3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40FerrisymplesiteFe3+3(AsO4)2(OH)3 · 5H2OMon.
8.CE.40HörnesiteMg3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40KöttigiteZn3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40ManganohörnesiteMn2+3(AsO4)2 · 8H2OMon. 2/m : P2/m
8.CE.40ParasymplesiteFe2+3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40VivianiteFe2+Fe2+2(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40PakhomovskyiteCo3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.45SymplesiteFe2+3(AsO4)2 · 8H2OTric. 1 : P1
8.CE.50CattiiteMg3(PO4)2 · 22H2OTric. 1 : P1
8.CE.55KoninckiteFe3+PO4 · 3H2OTet. 4 2 2 : P41 21 2
8.CE.60KaňkiteFeAsO4 · 3.5H2OMon. 2 : P2
8.CE.60HilarioniteFe3+2(SO4)(AsO4)(OH) · 6H2OMon. 2/m : B2/m
8.CE.65SteigeriteAl(VO4) · 3H2OMon. 2/m : P21/m
8.CE.70MetaschoderiteAl2(PO4)(VO4) · 6H2OMon. 2/m : P2/m
8.CE.75MalhmooditeFeZr(PO4)2 · 4H2OMon. 2/m : P21/b
8.CE.75ZigrasiteMgZr(PO4)2 · 4H2OTric. 1 : P1
8.CE.75UM2009-11-PO:CaHZrCaZr[PO4]2 · 4H2OTric.
8.CE.80SantabarbaraiteFe3+3(PO4)2(OH)3 · 5H2OAmor.
8.CE.85Metaköttigite(Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH)Tric. 1 : P1
8.CE.90SlavkoviteCu13(AsO4)6(AsO3OH)4 · 23H2OTric. 1 : P1

Other InformationHide

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 SchoderiteHide

References for SchoderiteHide

Localities for SchoderiteHide

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.
China
 
  • Hunan
    • Huaihua
      • Xupu Co.
National Geological Archives of China ...
USA
 
  • Arkansas
    • Garland County
      • Wilson Springs (Potash Sulfur Springs)
        • Union Carbide Mine
Howard +3 other references
  • Nevada
    • Eureka County
      • Gibellini Mining District
NBMG Bull 64 Geology and Mineral ...
[Anthony (1997)
        • Fish Creek Range
www.prophecydev.com (n.d.) +3 other references
 
Mineral and/or Locality  
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