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UM1999-38-WO:CrV

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Formula:
(V, Cr, W, O, H) [V:Cr:W ratio about 2:1:3]


Greyish green to pale greyish yellow, tiny spherulitic aggregates (diameter up to 0.1 mm), associated with rankachite; symmetry unknown, but assumed to be monoclinic or triclinic (Kolitsch, 1999).
Possibly a tungstate.


Classification of UM1999-38-WO:CrV

IMA status:Unnamed - valid
Nickel-Strunz 10th (pending) edition ID:7.GB.15

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
B : With additional anions and/or H2O
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X-Ray Powder Diffraction:
d-spacingIntensity
3.112 (10)
5.75 (7)
6.25 (4)
3.724 (3)
2.507 (3b)
10.5 (2)
4.19 (2)
4.13 (2b)
2.663 (2b)
2.329 (2)
Comments:Only strongest lines are given in above list.

Chemical Properties of UM1999-38-WO:CrV

Formula:
(V, Cr, W, O, H) [V:Cr:W ratio about 2:1:3]
Essential elements:Cr, V, W
All elements listed in formula:Cr, H, O, V, W

Relationship of UM1999-38-WO:CrV to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.GB.05Lindgrenite
Cu
 
3
(MoO
 
4
)
 
2
(OH)
 
2
7.GB.10Szenicsite
Cu
 
3
(MoO
 
4
)(OH)
 
4
7.GB.15Cuprotungstite
Cu
 
2
(WO
 
4
)(OH)
 
2
7.GB.20Phyllotungstite
(H
 
2
O,M)
 
x
(W,Fe)(O,OH)
 
3
 · yH
 
2
O (M = Ca, Cs, Pb or K)
7.GB.25Rankachite
Ca
 
0.5
(V
4+
 
,V
5+
 
)(W
6+
 
,Fe
3+
 
)
 
2
O
 
8
(OH) · 2H
 
2
O
7.GB.30Ferrimolybdite
Fe
 
2
(MoO
 
4
)
 
3
 · nH
 
2
O
7.GB.35Anthoinite
AlWO
 
3
(OH)
 
3
7.GB.35Mpororoite
Al
 
2
(WO
 
4
)
 
2
O · 6H
 
2
O
7.GB.40Obradovicite-KCu
H
 
4
(K,Na)CuFe
 
2
(MoO
 
4
)
 
5
(AsO
 
4
) · 12H
 
2
O
7.GB.45Mendozavilite-NaFe
Na(Ca,Mg)
 
2
Fe
3+
6
(PMo
 
11
O
 
39
)(PO
 
4
)
 
2
(OH,Cl)
 
10
 · 33H
 
2
O
7.GB.45Paramendozavilite
NaAl
 
4
Fe
3+
7
(PMo
 
12
O
 
40
)(PO
 
4
)
 
5
(OH)
 
16
 · 56H
 
2
O
7.GB.50Tancaite-(Ce)
FeCe(MoO
 
4
)
 
3
·3H
 
2
O

Other Names for UM1999-38-WO:CrV

Synonyms:
UM1999-38Unnamed (V-Cr-W Oxide)
Other Languages:

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 UM1999-38-WO:CrV

Reference List:

- +
U. Kolitsch (1999): Ein neues, Vanadium, Chrom und Wolfram enthaltendes Mineral aus einer Rankachit-Paragenese von der Grube Clara im mittleren Schwarzwald. Aufschluss 50, 23-32. (in German)

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    • Localities for UM1999-38-WO:CrV

    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.
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    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		U. Kolitsch (1999): Ein neues, Vanadium, Chrom und Wolfram enthaltendes Mineral aus einer Rankachit-Paragenese von der Grube Clara im mittleren Schwarzwald. Aufschluss 50, 23-32. (in German); WALENTA, K. (1999): Neue Mineralfunde von der Grube Clara. 8. Folge, 2. Teil. Lapis 24 (12), 40-44
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