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UM1999-38-WO:CrV

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)
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]
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
[OH|MoO
 
4
]
 
2
7.GB.10Szenicsite
Cu
 
3
(MoO
 
4
)(OH)
 
4
7.GB.15Cuprotungstite
Cu
 
2
[(OH)
 
2
|WO
 
4
]
7.GB.20Phyllotungstite
Ca
 
x
[(W,Fe)(O,OH)
 
3
]·yH
 
2
O
7.GB.25Rankachite
(V
4+
 
,V
5+
 
)(W
6+
 
,Fe
3+
 
)
 
2
O
 
8
(OH)•(Ca
 
x
H
 
2
O
 
y
) with x ~ 0.5, y ~ 2.
7.GB.30Ferrimolybdite
Fe
 
2
[MoO
 
4
]
 
3
 · nH
 
2
O
7.GB.35Anthoinite
WAlO
 
3
(OH)
 
3
 (?)
7.GB.35Mpororoite
AlWO
 
3
(OH)
 
3
·2H
 
2
O
7.GB.40Obradovicite
H
 
4
(K,Na)CuFe
 
2
AsO
 
4
(MoO
 
4
)
 
5
·12H
 
2
O
7.GB.45Mendozavilite
Na(Ca,Mg)
 
2
[Fe
 
6
(PO
 
4
)
 
2
(PMo
 
11
O
 
39
)(OH,Cl)
 
10
]·33H
 
2
O
7.GB.45Paramendozavilite
NaAl
 
4
[Fe
 
7
(PO
 
4
)
 
5
(PMo
 
12
O
 
40
)(OH)
 
16
]·56H
 
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

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    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.
    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
    Mineral and/or Locality
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