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Metaschoderite

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Formula:
Al
 
2
(PO
 
4
)(VO
 
4
) · 6H
 
2
O
System:MonoclinicColour:Yellowish orange
Hardness:2
Name:For a dehydration product of schoderite.


Dehydration product of schoderite.

Classification of Metaschoderite

IMA status:Approved
Strunz 8th edition ID:7/C.12-40
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:43.3.1.2

43 : COMPOUND PHOSPHATES, ETC.
3 : Hydrated Normal Compound Phosphates, etc·
Hey's CIM Ref.: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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Type Occurrence of Metaschoderite

Type Locality:VanNavSan Claim (Van Nav Sand claim), Fish Creek Range, Gibellini District, Eureka Co., Nevada, USA
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 {P1 1 2/m} {P2/m} {P1 2/m 1}
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:
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°
Maximum Birefringence:δ = 0.028

Chart 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:
Al
 
2
(PO
 
4
)(VO
 
4
) · 6H
 
2
O
Simplified for copy/paste:Al2(PO4)(VO4)·6H2O
Essential elements:Al, H, O, P, V
All elements listed in formula:Al, H, O, P, V

Relationship of Metaschoderite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.CE.05Chudobaite
(Mg,Zn)
 
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
· 10H
 
2
O
8.CE.05Geigerite
Mn
2+
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
· 10H
 
2
O
8.CE.10Newberyite
Mg(HPO
 
4
) · 3H
 
2
O
8.CE.15Brassite
Mg(HAsO
 
4
) · 4H
 
2
O
8.CE.20Phosphorrösslerite
Mg(HPO
 
4
) · 7H
 
2
O
8.CE.20Rösslerite
Mg(HAsO
 
4
) · 7H
 
2
O
8.CE.25Metaswitzerite
Mn
 
3
(PO
 
4
)
 
2
· 4H
 
2
O
8.CE.25Switzerite
(Mn,Fe)
 
3
(PO
 
4
)
 
2
· 7H
 
2
O
8.CE.30Lindackerite
CuCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
· 8-9H
 
2
O
8.CE.30Ondrušite
CaCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
· 10H
 
2
O
8.CE.30Veselovskýite
ZnCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
· 9H
 
2
O
8.CE.30Pradetite
CoCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
· 9H
 
2
O
8.CE.30Klajite
MnCu
 
4
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
· 9-10H
 
2
O
8.CE.35Bobierrite
Mg
 
3
(PO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Annabergite
Ni
 
3
(AsO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Arupite
Ni
 
3
(PO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Barićite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Erythrite
Co
 
3
(AsO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Ferrisymplesite
Fe
3+
3
(AsO
 
4
)
 
2
(OH)
 
3
· 5H
 
2
O
8.CE.40Hörnesite
Mg
 
3
(AsO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Köttigite
Zn
 
3
(AsO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Manganohörnesite
(Mn,Mg)
 
3
(AsO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Parasymplesite
Fe
2+
3
(AsO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Vivianite
Fe
2+
3
(PO
 
4
)
 
2
· 8H
 
2
O
8.CE.40Pakhomovskyite
Co
 
3
(PO
 
4
)
 
2
· 8H
 
2
O
8.CE.45Symplesite
Fe
2+
3
(AsO
 
4
)
 
2
· 8H
 
2
O
8.CE.50Cattiite
Mg
 
3
(PO
 
4
)
 
2
· 22H
 
2
O
8.CE.55Koninckite
Fe
3+
 
PO
 
4
· 3H
 
2
O
8.CE.60Kaňkite
FeAsO
 
4
· 3.5H
 
2
O
8.CE.65Steigerite
Al(VO
 
4
) · 3H
 
2
O
8.CE.70Schoderite
Al
 
2
(PO
 
4
)(VO
 
4
) · 8H
 
2
O
8.CE.75Malhmoodite
FeZr(PO
 
4
)
 
2
· 4H
 
2
O
8.CE.75Zigrasite
MgZr(PO
 
4
)
 
2
· 4H
 
2
O
8.CE.75Unnamed (Ca-analogue of Zigrasite)
CaZr[PO
 
4
]
 
2
· 4H
 
2
O
8.CE.80Santabarbaraite
Fe
3+
3
(PO
 
4
)
 
2
(OH)
 
3
· 5H
 
2
O
8.CE.85Metaköttigite
(Zn,Fe,Fe)
 
3
(AsO
 
4
)
 
2
· 8(H
 
2
O,OH)
Related Minerals - Hey's Index Grouping:

- +
21.3.1Steigerite
Al(VO
 
4
) · 3H
 
2
O
21.3.2Alvanite
(Zn,Ni)Al
 
4
(V
5+
 
O
 
3
)
 
2
(OH)
 
12
· 2H
 
2
O
21.3.4Schoderite
Al
 
2
(PO
 
4
)(VO
 
4
) · 8H
 
2
O
21.3.5Satpaevite
Al
 
12
V
4+
2
V
5+
6
O
 
37
· 30H
 
2
O
21.3.6Vanalite
NaAl
 
8
V
 
10
O
 
38
· 30H
 
2
O
21.3.7Wakefieldite-(Ce)
Ce(VO
 
4
)
21.3.7Wakefieldite-(Y)
Y(VO
 
4
)
21.3.8Chervetite
Pb
 
2
(V
 
2
O
 
7
)
21.3.9Mottramite
PbCu(VO
 
4
)(OH)
21.3.10Descloizite
Pb(Zn,Cu)(VO
 
4
)(OH)
21.3.11Clinobisvanite
Bi(VO
 
4
)
21.3.11Dreyerite
Bi(VO
 
4
)
21.3.11Pucherite
Bi(VO
 
4
)
21.3.12Schumacherite
Bi
 
3
(VO
 
4
)
 
2
O(OH)
21.3.13Namibite
Cu(BiO)
 
2
(VO
 
4
)(OH)
21.3.14Pottsite
HPbBi(VO
 
4
)
 
2
· 2H
 
2
O
21.3.15Duhamelite
(Pb,Bi,Ca)Cu(VO
 
4
)(OH,O)

Other Names for Metaschoderite

Other Languages:
German:Metaschoderit
Spanish:Metaschoderita

Other Information

Health Warning: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

Search Engines:
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  • External Links:
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  • Look for Metaschoderite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Metaschoderite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • High-end worldwide specimens & outstanding customer service
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  • Localities for Metaschoderite

    The 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. ? 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
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