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Metavanmeersscheite

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Formula:
U6+(UO2)3(PO4)2(OH)6 · 2H2O
Colour:
Medium yellow, canary yellow
Lustre:
Waxy, Dull, Earthy
Specific Gravity:
4.49 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in 1982 by Paul Piret and Michel Deliens for the dehydrated relationship, "meta-" and the parent mineral vanmeersscheite.
This page provides mineralogical data about Metavanmeersscheite.


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Classification of MetavanmeersscheiteHide

Approved
Approval Year:
1981
7/E.07-150
8.EC.20

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
C : UO2:RO4 = 3:2
42.7.14.2

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
19.11.2

19 : Phosphates
11 : Phosphates of U

Physical Properties of MetavanmeersscheiteHide

Waxy, Dull, Earthy
Transparency:
Translucent
Colour:
Medium yellow, canary yellow
Streak:
Very pale yellow
Tenacity:
Brittle
Cleavage:
Distinct/Good
(100)
Fracture:
Irregular/Uneven
Density:
4.49 g/cm3 (Calculated)

Optical Data of MetavanmeersscheiteHide

Type:
Biaxial (-)
RI values:
nα = 1.670 nβ = 1.680 nγ = 1.690
2V:
Measured: 83° , Calculated: 88°
Birefringence:
0.02
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v strong
Pleochroism:
Weak
Comments:
White and yellow to pale yellow

Chemical Properties of MetavanmeersscheiteHide

Formula:
U6+(UO2)3(PO4)2(OH)6 · 2H2O
IMA Formula:
U(UO2)3(PO4)2(OH)6 · 2H2O

Crystallography of MetavanmeersscheiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Fddd
Setting:
Fddd
Cell Parameters:
a = 34.18 Å, b = 33.88 Å, c = 14.07 Å
Ratio:
a:b:c = 1.009 : 1 : 0.415
Unit Cell V:
16,293.32 ų (Calculated from Unit Cell)
Z:
32
Morphology:
Thin platy crystals, also compact massive to earthy

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.49 (100)
6.01 (90)
5.38 (50)
4.23 (50)
3.516 (50)
3.073 (70)
2.886 (60)

Type Occurrence of MetavanmeersscheiteHide

Geological Setting of Type Material:
Granite pegmatite
Associated Minerals at Type Locality:

Synonyms of MetavanmeersscheiteHide

Other Language Names for MetavanmeersscheiteHide

Common AssociatesHide

Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2O
Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Associated Minerals Based on Photo Data:
Zeunerite3 photos of Metavanmeersscheite associated with Zeunerite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.EC.05Françoisite-(Nd)(Nd,Ce,Sm)(UO2)3(PO4)2O(OH) · 6H2OMon.
8.EC.05PhuralumiteAl2(UO2)3(PO4)3(OH)2 · 13H2OMon.
8.EC.05UpaliteAl(UO2)3(PO4)2O(OH) · 7H2OMon.
8.EC.05Françoisite-(Ce)(Ce,Nd,Ca)(UO2)3(PO4)2O(OH) · 6H2OMon. 2/m : P21/b
8.EC.10ArsenuranyliteCa(UO2)4(AsO4)2(OH)4 · 6H2OOrth.
8.EC.10DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmma
8.EC.10Kivuite(Th,Ca,Pb)(UO2)4(HPO4)2(OH)8 · 7H2O
8.EC.10Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
8.EC.10YingjiangiteK2Ca(UO2)7(PO4)4(OH)6 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
8.EC.15DumontitePb2(UO2)3(PO4)2(OH)4 · 3H2OMon. 2/m : P21/m
8.EC.15HügelitePb2(UO2)3(AsO4)2O2 · 5H2OMon.
8.EC.20VanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 4H2OOrth.
8.EC.20ArsenovanmeersscheiteU4+(UO2)3(AsO4)2(OH)2 · 4H2OOrth. mm2 : Pmn21
8.EC.25AlthupiteAlTh(UO2)7(PO4)4(OH)5O2 · 15H2OTric. 1 : P1
8.EC.30MunditeAl(UO2)3(PO4)2(OH)3 · 5.5H2OOrth.
8.EC.35PhurcaliteCa2(UO2)3(PO4)2O2 · 7H2OOrth.
8.EC.40BergeniteCa2Ba4(UO2)9(PO4)6O6 · 16H2OMon. 2/m : P21/b

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

42.7.14.1VanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 4H2OOrth.
42.7.14.3ArsenovanmeersscheiteU4+(UO2)3(AsO4)2(OH)2 · 4H2OOrth. mm2 : Pmn21

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.11.1LermontoviteU(PO4)(OH) · H2OOrth. mmm (2/m 2/m 2/m) : Ccca
19.11.3VanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 4H2OOrth.
19.11.4Chernikovite(H3O)2(UO2)2(PO4)2 · 6H2OTet.
19.11.5VyacheslaviteU(PO4)(OH) · nH2OOrth.
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.

Fluorescence of MetavanmeersscheiteHide

Fluoresces bright green to yellow green in SW an LW UV (Kobokobo).

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 MetavanmeersscheiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Piret, P. & Deliens, M. (1982): Vanmeersscheite U(UO2)3(PO4)2(OH)6.4H2O and meta-vanmeersscheite U(UO2)3(PO4)2(OH)6.2H2O, new minerals. Bulletin de Minéralogie, 105, 125-128 (in French).
American Mineralogist (1982): 67: 1077.

Internet Links for MetavanmeersscheiteHide

Localities for MetavanmeersscheiteHide

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)
    • Ústí Region
      • Krušné Hory Mts (Erzgebirge)
        • Dubí (Eichwald)
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)]
Democratic Republic of Congo (Zaïre) (TL)
 
  • Sud-Kivu
    • Mwenga
Piret, P. & Deliens, M. (1982): Vanmeersscheite U(UO2)3(PO4)2(OH)6.4H2O and meta-vanmeersscheite U(UO2)3(PO4)2(OH)6.2H2O, new minerals. Bulletin de Minéralogie, 105, 125-128 (in French). American Mineralogist, volume 67, pp. 1077(1982)
Germany
 
  • Saxony
    • Erzgebirge
      • Johanngeorgenstadt District
Maggie Wilson
Italy
 
  • Trentino-Alto Adige (Trentino-Südtirol)
    • Trento Province
      • Giudicarie Valleys
        • Chiese Valley
          • Condino
Campostrini, I., Demartin, F., & Gramaccioli, C. M. (2006). Rio Giulis. Minerali secondari del giacimento uranifero presso Condino, Trento. Rivista Mineralogica Italiana, 30(3), 152-165.
USA
 
  • Maine
    • Oxford Co.
      • Newry
Gene Foord, personal communication, 1993 and King and Foord, 1994, Mineralogy of Maine listing both ends of the hydration series "vanmeersscheite/metavanmeersscheite"
Mineral and/or Locality  
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