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Metaschoderite

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Formula:
Al2(PO4)(VO4) · 6H2O
System:
Monoclinic
Colour:
Yellowish orange
Hardness:
2
Name:
For a dehydration product of schoderite.
Dehydration product of schoderite.

Classification of Metaschoderite

Approved
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
43.3.1.2

43 : COMPOUND PHOSPHATES, ETC.
3 : Hydrated Normal Compound Phosphates, etc·
21.3.3

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

Year of Discovery:
1960

Physical Properties of Metaschoderite

Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Yellowish orange
Hardness (Mohs):
2

Crystallography of Metaschoderite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/m
Space Group Setting:
P2/m
Cell Parameters:
a = 11.4Å, b = 14.9Å, c = 9.2Å
β = 79°
Ratio:
a:b:c = 0.765 : 1 : 0.617
Unit Cell Volume:
V 1,534.00 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Pseudomorphs after bladed to scaly crystals or spherulitic aggregates.
X-Ray Powder Diffraction Data:
d-spacingIntensity
14.9 (60)
11.1 (40)
9.6 (15)
7.5 (100)
5.68 (8)
4.92 (10)
3.02 (20)

Optical Data of Metaschoderite

Type:
Biaxial (+)
RI values:
nα = 1.598 nβ = 1.604 nγ = 1.626
2V:
Measured: 59° , Calculated: 56°
Max Birefringence:
δ = 0.028
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v weak

Chemical Properties of Metaschoderite

Formula:
Al2(PO4)(VO4) · 6H2O
Essential elements:
All elements listed in formula:

Relationship of Metaschoderite to other Species

8.CE.05Chudobaite(Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2O
8.CE.05GeigeriteMn52+(AsO4)2(HAsO4)2 · 10H2O
8.CE.10NewberyiteMg(HPO4) · 3H2O
8.CE.15BrassiteMg(HAsO4) · 4H2O
8.CE.20PhosphorrössleriteMg(HPO4) · 7H2O
8.CE.20RössleriteMg(HAsO4) · 7H2O
8.CE.25MetaswitzeriteMn3(PO4)2 · 4H2O
8.CE.25Switzerite(Mn,Fe)3(PO4)2 · 7H2O
8.CE.30LindackeriteCuCu4(AsO4)2(HAsO4)2 · 8-9H2O
8.CE.30OndrušiteCaCu4(AsO4)2(HAsO4)2 · 10H2O
8.CE.30VeselovskýiteZnCu4(AsO4)2(HAsO4)2 · 9H2O
8.CE.30PradetiteCoCu4(AsO4)2(HAsO4)2 · 9H2O
8.CE.30KlajiteMnCu4(AsO4)2(HAsO4)2 · 9-10H2O
8.CE.35BobierriteMg3(PO4)2 · 8H2O
8.CE.40AnnabergiteNi3(AsO4)2 · 8H2O
8.CE.40ArupiteNi3(PO4)2 · 8H2O
8.CE.40Barićite(Mg,Fe)3(PO4)2 · 8H2O
8.CE.40ErythriteCo3(AsO4)2 · 8H2O
8.CE.40FerrisymplesiteFe33+(AsO4)2(OH)3 · 5H2O
8.CE.40HörnesiteMg3(AsO4)2 · 8H2O
8.CE.40KöttigiteZn3(AsO4)2 · 8H2O
8.CE.40Manganohörnesite(Mn,Mg)3(AsO4)2 · 8H2O
8.CE.40ParasymplesiteFe32+(AsO4)2 · 8H2O
8.CE.40VivianiteFe32+(PO4)2 · 8H2O
8.CE.40PakhomovskyiteCo3(PO4)2 · 8H2O
8.CE.45SymplesiteFe32+(AsO4)2 · 8H2O
8.CE.50CattiiteMg3(PO4)2 · 22H2O
8.CE.55KoninckiteFe3+PO4 · 3H2O
8.CE.60KaňkiteFeAsO4 · 3.5H2O
8.CE.65SteigeriteAl(VO4) · 3H2O
8.CE.70SchoderiteAl2(PO4)(VO4) · 8H2O
8.CE.75MalhmooditeFeZr(PO4)2 · 4H2O
8.CE.75ZigrasiteMgZr(PO4)2 · 4H2O
8.CE.75Unnamed (Ca-analogue of Zigrasite)CaZr[PO4]2 · 4H2O
8.CE.80SantabarbaraiteFe33+(PO4)2(OH)3 · 5H2O
8.CE.85Metaköttigite(Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH)
21.3.1SteigeriteAl(VO4) · 3H2O
21.3.2Alvanite(Zn,Ni)Al4(V5+O3)2(OH)12 · 2H2O
21.3.4SchoderiteAl2(PO4)(VO4) · 8H2O
21.3.5SatpaeviteAl12V24+V65+O37 · 30H2O
21.3.6VanaliteNaAl8V10O38 · 30H2O
21.3.7Wakefieldite-(Ce)Ce(VO4)
21.3.7Wakefieldite-(Y)Y(VO4)
21.3.8ChervetitePb2(V2O7)
21.3.9MottramitePbCu(VO4)(OH)
21.3.10DescloizitePb(Zn,Cu)(VO4)(OH)
21.3.11ClinobisvaniteBi(VO4)
21.3.11DreyeriteBi(VO4)
21.3.11PucheriteBi(VO4)
21.3.12SchumacheriteBi3(VO4)2O(OH)
21.3.13NamibiteCu(BiO)2(VO4)(OH)
21.3.14PottsiteHPbBi(VO4)2 · 2H2O
21.3.15Duhamelite(Pb,Bi,Ca)Cu(VO4)(OH,O)

Other Names for Metaschoderite

Name in Other Languages:

Other Information

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 Metaschoderite

Reference List:
American Mineralogist (1962): 47: 637-648.

American Mineralogist (1979): 64: 713.

Internet Links for Metaschoderite

Localities for Metaschoderite

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.
USA
 
  • Arkansas
    • Garland Co.
      • Wilson Springs (Potash Sulfur Springs)
        • Union Carbide Mine
Mineralogical Magazine 1984 48 : 289-293
  • Nevada
    • Eureka Co.
      • Gibellini District
[Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 4, 362
        • Fish Creek Range
NBMG Spec. Pub. 31 Minerals of Nevada; American Mineralogist (1979), 64:713-720
Mineral and/or Locality  
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