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Vyacheslavite

Big Photo

Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
© Stephan Wolfsried

Show Vyacheslavite Photos (3)
Formula:
UPO
 
4
(OH)·nH
 
2
O
System:OrthorhombicColour:Green to dark green
Name:Named after Vyacheslav Gavrilovich Melkov (b. 1911), mineralogist.
This page provides mineralogical data about Vyacheslavite.

Classification of Vyacheslavite

IMA status:Approved 1983
Strunz 8th edition ID:7/D.43-10
Nickel-Strunz 10th (pending) edition ID:8.DN.20

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
N : With only large cations
Dana 8th edition ID:40.4.8.3

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
4 : (AB)5(XO4)2·xH2O
Hey's CIM Ref.:19.11.5

19 : Phosphates
11 : Phosphates of U
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Type Occurrence of Vyacheslavite

Co-type Localities:Dzhentuar U deposit, Auminzatau Mts, Central Kyzylkum Region, Kyzylkum Desert, Uzbekistan
Rudnoye uranium deposit, Auminzatau Mts, Central Kyzylkum Region, Kyzylkum Desert, Uzbekistan
Year of Discovery:1984

Physical Properties of Vyacheslavite

Lustre:Greasy
Colour:Green to dark green

Crystallography of Vyacheslavite

Crystal System:Orthorhombic
Cell Parameters:a = 6.96Å, b = 9.1Å, c = 12.38Å
Ratio:a:b:c = 0.765 : 1 : 1.36
Unit Cell Volume:V 784.10 ų (Calculated from Unit Cell)

Optical Data of Vyacheslavite

Type:Biaxial (-)
RI values: nα = 1.700 nβ = 1.726 - 1.729 nγ = 1.729 - 1.731
Maximum Birefringence:δ = 0.029 - 0.031

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v strong

Chemical Properties of Vyacheslavite

Formula:
UPO
 
4
(OH)·nH
 
2
O
Essential elements:H, O, P, U
All elements listed in formula:H, O, P, U

Relationship of Vyacheslavite to other Species

Related Minerals - Nickel-Strunz Grouping):
8.DN.05Natrophosphate
Na
 
7
(PO
 
4
)
 
2
F·19H
 
2
O
8.DN.10Isoclasite
Ca
 
2
[OH|PO
 
4
] · 2H
 
2
O
8.DN.15Lermontovite
UPO
 
4
·OH·H
 
2
O
Related Minerals - Hey's Index Grouping:
19.11.1Lermontovite
UPO
 
4
·OH·H
 
2
O
19.11.2Metavanmeersscheite
U
4+
 
(UO
 
2
)
 
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 2H
 
2
O
19.11.3Vanmeersscheite
U
4+
 
(UO
 
2
)
 
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 4H
 
2
O
19.11.4Chernikovite
(H
 
3
O)
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 6H
 
2
O
19.11.6Metanatroautunite
NaUO
 
2
PO
 
4
·4H
 
2
O
19.11.7Yingjiangite
(K,Ca)(UO
 
2
)
 
3
[OH|(H
 
2
O,OH)|(PO
 
4
)
 
2
] · 3H
 
2
O
19.11.8Meta-ankoleite
K
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 6H
 
2
O
19.11.9Uramphite
(NH
 
4
)
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 6H
 
2
O
19.11.10Torbernite
Cu(UO
 
2
)
 
2
(PO
 
4
)
 
2
·12H
 
2
O
19.11.11Metatorbernite
Cu(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 8H
 
2
O
19.11.12Saléeite
Mg(UO
 
2
)
 
2
(PO
 
4
)
 
2
·10H
 
2
O
19.11.13Ningyoite
CaU(PO
 
4
)
 
2
·1-2H
 
2
O
19.11.14Meta-autunite
Ca(UO
 
2
)
 
2
[PO
 
4
]
 
2
· 6-8H
 
2
O
19.11.15Autunite
Ca(UO
 
2
)
 
2
(PO
 
4
)
 
2
·11H
 
2
O
19.11.16Pseudo-autunite
(H
 
3
O)
 
4
Ca
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
4
 · 5H
 
2
O (?)
19.11.17Phurcalite
Ca
 
2
(UO
 
2
)
 
3
[O|PO
 
4
]
 
2
 · 7H
 
2
O
19.11.18Phosphuranylite
(H
 
3
O)
 
3
KCa(UO
 
2
)
 
7
[O|PO
 
4
]
 
4
 · 8H
 
2
O
19.11.19Ulrichite
CaCu(UO
 
2
)[PO
 
4
]
 
2
 · 4H
 
2
O
19.11.20Bergenite
Ca
 
2
Ba
 
4
[(UO
 
2
)
 
3
O
 
2
(PO
 
4
)
 
2
]
 
3
·16H
 
2
O
19.11.21Metauranocircite
Ba(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 7H
 
2
O
19.11.22Uranocircite
Ba(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 10H
 
2
O
19.11.23Ranunculite
HAlUO
 
2
PO
 
4
(OH)
 
3
·4H
 
2
O
19.11.24Triangulite
Al
 
3
(UO
 
2
)
 
4
(PO
 
4
)
 
4
(OH)
 
5
·5H
 
2
O
19.11.25Mundite
Al(UO
 
2
)
 
3
[(OH)
 
3
|(PO
 
4
)
 
2
] · 5.5H
 
2
O
19.11.26Upalite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH)·7H
 
2
O
19.11.27Furongite
Al
 
13
(UO
 
2
)
 
7
(PO
 
4
)
 
13
(OH)
 
14
 · 58H
 
2
O
19.11.28Threadgoldite
Al(UO
 
2
)
 
2
[OH|(PO
 
4
)
 
2
] · 8H
 
2
O
19.11.29Phuralumite
Al
 
2
(UO
 
2
)
 
3
[(OH)
 
2
|(PO
 
4
)
 
3
] · 13H
 
2
O
19.11.30Moreauite
Al
 
3
UO
 
2
(PO
 
4
)
 
3
(OH)
 
2
·13H
 
2
O
19.11.31Sabugalite
HAl(UO
 
2
)
 
4
(PO
 
4
)
 
4
·16H
 
2
O
19.11.32Uranospathite
HAl(UO
 
2
)
 
4
(PO
 
4
)
 
4
·40H
 
2
O
19.11.33Althupite
AlTh(UO
 
2
)
 
7
[O
 
2
|(OH)
 
5
|(PO
 
4
)
 
4
] · 15H
 
2
O
19.11.34Françoisite-(Nd)
(Nd,Ce,Sm)(UO
 
2
)
 
3
[O|OH|(PO
 
4
)
 
2
] · 6H
 
2
O
19.11.35Kivuite
H
 
2
Th(UO
 
2
)
 
3
[O|OH|(PO
 
4
)
 
2
] · 6H
 
2
O (?)
19.11.36Parsonsite
Pb
 
2
(UO
 
2
)[PO
 
4
]
 
2
 · 2H
 
2
O
19.11.37Dewindtite
Pb(UO
 
2
)
 
3
[OH|PO
 
4
]
 
2
 · 3H
 
2
O
19.11.38Dumontite
Pb
 
2
(UO
 
2
)
 
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 3H
 
2
O
19.11.39Przhevalskite
Pb
 
2
(UO
 
2
)
 
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 3H
 
2
O
19.11.40Lehnerite
Mn
2+
 
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 8H
 
2
O
19.11.41Bassetite
Fe
2+
 
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 8H
 
2
O
19.11.42Vochtenite
(Fe
2+
 
,Mg)Fe
3+
 
(UO
 
2
)
 
4
[OH|(PO
 
4
)
 
4
] · 12-13H
 
2
O

Other Names for Vyacheslavite

Synonyms:
IMA1983-017
German names:
Vyacheslavit
Spanish names:
Vyacheslavita

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 Vyacheslavite

Reference List:Belova, L.N., Gorshkov, A.I., Ivanova, O.A., Sivtsov, A.V. & Boronikhin, V.A. (1983): New natural uranium(IV) phosphate. Doklady Akademii Nauk SSSR: 3, 1460-1462. (in Russian).

Belova, L.N., Gorshkov, A.I., Ivanova, O.A., Sivtsov, A.V., Lizorkina, L.I. & Voronikhan, V.A. (1984): Vyacheslavite U4+(PO4)(OH).nH2O - a new uranium phosphate. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 113(3): 360-365. (in Russian).

American Mineralogist (1985): 70: 878.

Internet Links for Vyacheslavite

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    Localities for Vyacheslavite

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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.
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    (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)
      • Liberec Region
    		Scharm, B.: Přehled minerálů nalezených v oblasti uranových koncentrací v severočeské křídě. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1995, roč. 3, s. 169-172.
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Menzenschwand
    		Lapis 21(12), 45 (1996)
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		U. Kolitsch, G. Blaß, H.-W. Graf und J. Gröbner (2004): Neufunde aus der Grube Clara im mittleren Schwarzwald. Lapis 29 (2) 18-23; 50. (in German)
    Slovakia
     
    • Košice Region
      • Southern Slanské Mts
    		Koděra, P., Rojkovičová, Ľ.,Košárková, M., 1998: Mineralógická správa lokality Byšta, Au-Ag. Manuscript, Archiv Geofond, Bratislava, 68 p
    Uzbekistan
     
    • Kyzylkum Desert
      • Central Kyzylkum Region
        • Auminzatau Mts
    		ZVMO 113 (1984)
    Mineral and/or Locality
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