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Vyacheslavite

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Vyacheslav Gavrilovich Melkov
Formula:
U(PO4)(OH) · nH2O
Colour:
Green to dark green
Lustre:
Greasy
Crystal System:
Orthorhombic
Name:
Named after Vyacheslav Gavrilovich Melkov (1911-1991), Russian mineralogist specializing in uranium minerals. Another mineral, melkovite, was also named after him.
This page provides mineralogical data about Vyacheslavite.


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Classification of VyacheslaviteHide

Approved
Approval Year:
1983
8.DN.20

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

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
4 : (AB)5(XO4)2·xH2O
19.11.5

19 : Phosphates
11 : Phosphates of U

Physical Properties of VyacheslaviteHide

Greasy
Colour:
Green to dark green

Optical Data of VyacheslaviteHide

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

Formula:
U(PO4)(OH) · nH2O
IMA Formula:
U4+PO4(OH) · 2.5H2O

Crystallography of VyacheslaviteHide

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

Type Occurrence of VyacheslaviteHide

Synonyms of VyacheslaviteHide

Other Language Names for VyacheslaviteHide

Related Minerals - Nickel-Strunz GroupingHide

8.DN.05NatrophosphateNa7(PO4)2F · 19H2OIso. m3m (4/m 3 2/m) : Fd3c
8.DN.10IsoclasiteCa2(PO4)(OH) · 2H2OMon.
8.DN.15LermontoviteU(PO4)(OH) · H2OOrth. mmm (2/m 2/m 2/m) : Ccca
8.DN.15UrphoiteU4+6(PO4)7(OH)3 · 4H2OMon.

Related Minerals - Dana Grouping (8th Ed.)Hide

40.4.8.1NingyoiteCaU(PO4)2 · 1-2H2OOrth.
40.4.8.2LermontoviteU(PO4)(OH) · H2OOrth. mmm (2/m 2/m 2/m) : Ccca

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.11.1LermontoviteU(PO4)(OH) · H2OOrth. mmm (2/m 2/m 2/m) : Ccca
19.11.2MetavanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 2H2OOrth. mmm (2/m 2/m 2/m) : Fddd
19.11.3VanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 4H2OOrth.
19.11.4Chernikovite(H3O)2(UO2)2(PO4)2 · 6H2OTet.
19.11.6MetanatroautuniteNa(UO2)(PO4)(H2O)3Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
19.11.7YingjiangiteK2Ca(UO2)7(PO4)4(OH)6 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
19.11.8Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
19.11.9Uramphite(NH4)2(UO2)2(PO4)2 · 6H2OTet.
19.11.10TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
19.11.11MetatorberniteCu(UO2)2(PO4)2 · 8H2OTet. 4/m : P4/n
19.11.12SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m : P21/b
19.11.13NingyoiteCaU(PO4)2 · 1-2H2OOrth.
19.11.14Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2OTet. 4/mmm (4/m 2/m 2/m)
19.11.15AutuniteCa(UO2)2(PO4)2 · 11H2OOrth. mmm (2/m 2/m 2/m) : Pnma
19.11.16Pseudo-autunite(H3O)4Ca2(UO2)2(PO4)4 · 5H2OOrth.
19.11.17PhurcaliteCa2(UO2)3(PO4)2O2 · 7H2OOrth.
19.11.18Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
19.11.19UlrichiteCaCu(UO2)(PO4)2 · 4H2OMon.
19.11.20BergeniteCa2Ba4(UO2)9(PO4)6O6 · 16H2OMon. 2/m : P21/b
19.11.21Metauranocircite-IBa(UO2)2(PO4)2 · 7H2OMon. 2 : P21
19.11.22UranocirciteBa(UO2)2(PO4)2 · 10H2OTet.
19.11.23RanunculiteHAl(UO2)(PO4)(OH)3 · 4H2OMon.
19.11.24TrianguliteAl3(UO2)4(PO4)4(OH)5 · 5H2OTric.
19.11.25MunditeAl(UO2)3(PO4)2(OH)3 · 5.5H2OOrth.
19.11.26UpaliteAl(UO2)3(PO4)2O(OH) · 7H2OMon.
19.11.27FurongiteAl13(UO2)7(PO4)13(OH)14 · 58H2OTric. 1 : P1
19.11.28ThreadgolditeAl(UO2)2(PO4)2(OH) · 8H2OMon.
19.11.29PhuralumiteAl2(UO2)3(PO4)3(OH)2 · 13H2OMon.
19.11.30MoreauiteAl3(UO2)(PO4)3(OH)2 · 13H2O
19.11.31SabugaliteHAl(UO2)4(PO4)4 · 16H2OMon. 2/m : B2/m
19.11.32Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)Orth. mm2 : Pnn2
19.11.33AlthupiteAlTh(UO2)7(PO4)4(OH)5O2 · 15H2OTric. 1 : P1
19.11.34Françoisite-(Nd)(Nd,Ce,Sm)(UO2)3(PO4)2O(OH) · 6H2OMon.
19.11.35Kivuite(Th,Ca,Pb)(UO2)4(HPO4)2(OH)8 · 7H2O
19.11.36ParsonsitePb2(UO2)(PO4)2Tric. 1 : P1
19.11.37DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmma
19.11.38DumontitePb2(UO2)3(PO4)2(OH)4 · 3H2OMon. 2/m : P21/m
19.11.39PrzhevalskitePb2(UO2)3(PO4)2(OH)4 · 3H2OOrth.
19.11.40LehneriteMn2+(UO2)2(PO4)2 · 8H2OMon.
19.11.41BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
19.11.42Vochtenite(Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2OMon.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for VyacheslaviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 VyacheslaviteHide

Localities for VyacheslaviteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Liberec 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)
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)
  • Bavaria
    • Upper Palatinate
      • 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.; Dill, H. G., Melcher, F., Gerdes, A., & Weber, B. (2008). The origin and zoning of hypogene and supergene Fe–Mn–Mg–Sc–U–REE phosphate mineralization from the newly discovered Trutzhofmühle aplite, Hagendorf pegmatite province, Germany. The Canadian Mineralogist, 46(5), 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 (TL)
 
  • 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
Mineral and/or Locality  
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