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Vyacheslavite

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Big Photo

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

Show Vyacheslavite Photos (3)



Formula:
U(PO
 
4
)(OH) · nH
 
2
O
System:OrthorhombicColour:Green to dark green
Name:
Named after Vyacheslav Gavrilovich Melkov (b. 1911), Russian mineralogist. Another mineral, melkovite, was also named after him.
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 U 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:
U(PO
 
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
(PO
 
4
)(OH) · 2H
 
2
O
8.DN.15Lermontovite
U(PO
 
4
)(OH) · H
 
2
O
8.DN.15Urphoite
U
4+
6
(PO
 
4
)
 
7
(OH)
 
3
 · 4H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.11.1Lermontovite
U(PO
 
4
)(OH) · H
 
2
O
19.11.2Metavanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
 · 2H
 
2
O
19.11.3Vanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
 · 4H
 
2
O
19.11.4Chernikovite
(H
 
3
O)
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
2
 · 6H
 
2
O
19.11.6Metanatroautunite
Na(UO
 
2
)(PO
 
4
) · 2-3H
 
2
O
19.11.7Yingjiangite
K
 
2
Ca(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
6
 · 6H
 
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
(PO
 
4
)
 
2
O · 7H
 
2
O
19.11.18Phosphuranylite
(H
 
3
O)
 
3
KCa(UO
 
2
)
 
7
(PO
 
4
)
 
4
O
 
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
)
 
9
(PO
 
4
)
 
6
O
 
6
 · 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
HAl(UO
 
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
(PO
 
4
)
 
2
(OH)
 
3
 · 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
(PO
 
4
)
 
2
(OH) · 8H
 
2
O
19.11.29Phuralumite
Al
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
3
(OH)
 
2
 · 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
(Al,☐)(UO
 
2
)
 
2
(PO
 
4
)
 
2
F · 20(H
 
2
O,F)
19.11.33Althupite
AlTh(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
5
O
 
2
 · 15H
 
2
O
19.11.34Françoisite-(Nd)
(Nd,Ce,Sm)(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 6H
 
2
O
19.11.35Kivuite
(Th,Ca,Pb)(UO
 
2
)
 
4
(HPO
 
4
)
 
2
(OH)
 
8
 · 7H
 
2
O
19.11.36Parsonsite
Pb
 
2
(UO
 
2
)(PO
 
4
)
 
2
 · 2H
 
2
O
19.11.37Dewindtite
Pb(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
2
 · 3H
 
2
O
19.11.38Dumontite
Pb
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
4
 · 3H
 
2
O
19.11.39Przhevalskite
Pb
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
4
 · 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
(PO
 
4
)
 
4
(OH) · 12-13H
 
2
O

Other Names for Vyacheslavite

Synonyms:
IMA1983-017
Other Languages:
German:Vyacheslavit
Spanish: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

    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)
      • 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.
      • Ústí Region
        • Česká Lípa (Böhmisch Leipa)
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    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)
    • Bavaria
      • Upper Palatinate
        • Oberpfälzer Wald
          • Vohenstrauß
            • Pleystein
    		DILL, H.G., MELCHER, F., GERDES, A. and WEBER, B. (2008): The origin and zoning of hypogene and supergene Fe-Mn-Mg-Sc-U-REE-Zn phosphate mineralization from the newly discovered Trutzhofmühle aplite (Hagendorf pegmatite province, Germany). Canadian Mineralogist 46, 1131-1157.
    Slovakia
     
    • Košice Region
      • Trebišov Co.
    		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); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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