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Chervetite

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Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon
© JBS 2006

Show Chervetite Photos (19)



Formula:
Pb
 
2
(V
 
2
O
 
7
)
System:MonoclinicHardness:2 - 2½
Name:For French mineralogist, Jean Chervet (1904-62).
This page provides mineralogical data about Chervetite.

Classification of Chervetite

IMA status:Approved
Strunz 8th edition ID:7/A.20-30
Nickel-Strunz 10th (pending) edition ID:8.FA.15

8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
A : Polyphosphates, etc., without OH and H2O; dimers of corner-sharing RO4 tetrahedra.
Dana 8th edition ID:38.5.5.1

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
5 : Miscellaneous
Hey's CIM Ref.:21.3.8

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 Chervetite

Type Locality:Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon
Year of Discovery:1963

Physical Properties of Chervetite

Hardness (Mohs):2 - 2½

Crystallography of Chervetite

Crystal System:Monoclinic
Cell Parameters:a = 13.3Å, b = 7.14Å, c = 7.08Å
β = 106°
Ratio:a:b:c = 1.863 : 1 : 0.992
Unit Cell Volume:V 646.29 ų (Calculated from Unit Cell)

Optical Data of Chervetite

Type:Biaxial (-)
Dispersion:r > v very strong

Chemical Properties of Chervetite

Formula:
Pb
 
2
(V
 
2
O
 
7
)
Essential elements:O, Pb, V
All elements listed in formula:O, Pb, V

Relationship of Chervetite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.FA.05Blossite
α-Cu
 
2
(V
 
2
O
 
7
)
8.FA.10Ziesite
β-Cu
 
2
(V
 
2
O
 
7
)
8.FA.15UM1999-17:O:PbV
Pb
 
4
(VO
 
4
)
 
2
O
8.FA.20Pyrocoproite
(K,Na)
 
2
Mg(P
 
2
O
 
7
)
8.FA.20Pyrophosphite
K
 
2
Ca(P
 
2
O
 
7
)
8.FA.25Petewilliamsite
(Ni,Co)
 
30
(As
 
2
O
 
7
)
 
15
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
21.3.3Metaschoderite
Al
 
2
(PO
 
4
)(VO
 
4
) · 6H
 
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
)
21.3.9Mottramite
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 Chervetite

Other Languages:
German:Chervetit
Russian:Шерветит
Spanish:Chervetita

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 Chervetite

Reference List:

- +
Bariand, P., Chantret, F., Pouget, R. and Rimsky, A. (1963): Une nouvelle éspèce minérale: la chervetite, pyrovanadate de plomb Pb2V2O7. Bull. Soc. Franc. Minéral. Cristallogr. 86, 117-120. (in French).

American Mineralogist: 48: 1416.

Shannon, R. D. & Calvo, C. (1973): Refinement of the crystal structure of synthetic chervetite, Pb2V2O7. Can. J. Chem. 51, 70-76.

Bulletin de Mineralogie: 90: 279-284.

Internet Links for Chervetite

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  • Raman and XRD data at RRUFF project
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    • Localities for Chervetite

    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.
    Hide Locality List
    (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.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Příbram
          • Vrančice
    		[Lapis 1995, 12, p.13-24]
    Gabon
     
    • Haut-Ogooué Province
      • Franceville
    		Bull.Soc.fr.Min.Crist.(1963) 86, 117-120
    Germany
     
    • Lower Saxony
      • Harz Mts
        • St Andreasberg District
    		No reference listed
    USA
     
    • Michigan
      • Baraga Co.
        • Huron River
    		Rocks & Minerals 82:298-308
    • Nevada
      • Clark Co.
        • Goodsprings District
    		NBMG Spec. Pub. 31 Minerals of Nevada
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