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Metaschoepite

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Alfred Schoep
Formula:
UO3 · 1-2H2O
Crystal System:
Orthorhombic
Member of:
Name:
Named by Charles L. Christ and Joan R. Clark in 1960 for the dehydrated relationship of the mineral to schoepite.
May occur as a dehydration product of schoepite, and may itself dehydrate to paulscherrerite.


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Classification of MetaschoepiteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.GA.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
A : Without additional cations
5.2.1.1

5 : OXIDES CONTAINING URANIUM OR THORIUM
2 : AXO3·xH2O
7.16.4

7 : Oxides and Hydroxides
16 : Oxides of U

Chemical Properties of MetaschoepiteHide

Formula:
UO3 · 1-2H2O
IMA Formula:
(UO2)8O2(OH)12 · 10H2O

Crystallography of MetaschoepiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcn
Cell Parameters:
a = 13.98 Å, b = 16.7 Å, c = 14.67 Å
Ratio:
a:b:c = 0.837 : 1 : 0.878
Unit Cell V:
3,424.95 ų (Calculated from Unit Cell)

Type Occurrence of MetaschoepiteHide

Other Language Names for MetaschoepiteHide

Relationship of Metaschoepite to other SpeciesHide

Member of:
Other Members of this group:
PaulscherreriteUO2(OH)2Mon.
Schoepite(UO2)8O2(OH)12 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca

Common AssociatesHide

Associated Minerals Based on Photo Data:
Antlerite1 photo of Metaschoepite associated with Antlerite on mindat.org.
Schoepite1 photo of Metaschoepite associated with Schoepite on mindat.org.
Vandendriesscheite1 photo of Metaschoepite associated with Vandendriesscheite on mindat.org.
Uraninite1 photo of Metaschoepite associated with Uraninite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.GA.05ParaschoepiteUO3 · 2H2OOrth.
4.GA.05Schoepite(UO2)8O2(OH)12 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca
4.GA.10IanthiniteU4+(UO2)5O7 · 10H2OOrth. mm2 : Amm2
4.GA.15MetastudtiteUO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
4.GA.15Studtite[(UO2)(O2)(H2O)2] · H2OMon.
4.GA.20PaulscherreriteUO2(OH)2Mon.

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

5.2.1.2ParaschoepiteUO3 · 2H2OOrth.
5.2.1.3Schoepite(UO2)8O2(OH)12 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.16.1UraniniteUO2Iso. m3m (4/m 3 2/m) : Fm3m
7.16.2Schoepite(UO2)8O2(OH)12 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca
7.16.3ParaschoepiteUO3 · 2H2OOrth.
7.16.5MetastudtiteUO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
7.16.6Studtite[(UO2)(O2)(H2O)2] · H2OMon.
7.16.7IanthiniteU4+(UO2)5O7 · 10H2OOrth. mm2 : Amm2
7.16.8CompreignaciteK2(UO2)6O4(OH)6 · 7H2OOrth.
7.16.9VandenbrandeiteCu(UO2)(OH)4Tric. 1 : P1
7.16.10RoubaultiteCu2(UO2)3(CO3)2O2(OH)2•4H2OTric. 1 : P1
7.16.11BecquereliteCa(UO2)6O4(OH)6 · 8H2OOrth. mm2 : Pna21
7.16.12RameauiteK2Ca(H[3]2O)(H[5]2O)4[(UO2)6O6(OH)4](H[4]2O)Mon. m : Bb
7.16.13AgrinieriteK2(Ca,Sr)[(UO2)3O3(OH)2]2 · 5H2OOrth.
7.16.14ProtasiteBa(UO2)3O3(OH)2 · 3H2OMon.
7.16.15BillietiteBa(UO2)6O4(OH)6 · 4-8H2OOrth. mm2
7.16.16BauranoiteBa(UO2)2(OH)6 · 1-2H2O
7.16.17Metacalciouranoite(Ca,Ba,Pb,K2)U2O7 · 2H2O
7.16.18Calciouranoite(Ca,Ba,Pb)U2O7 · 5H2O
7.16.19OrthobranneriteU4+U6+Ti4O12(OH)2Orth.
7.16.20Thorutite(Th,U,Ca)Ti2(O,OH)6Mon.
7.16.21Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig.
7.16.22Davidite-(Ce)(Ce,La)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig. 3 : R3
7.16.23Brannerite(U4+,REE,Th,Ca)(Ti,Fe3+,Nb)2(O,OH)6Mon. 2/m : B2/m
7.16.24FourmarieritePb(UO2)4O3(OH)4 · 4H2OOrth.
7.16.25Richetite(Fe3+,Mg)Pb 8.6(UO2)36O36(OH)24•41H2O Tric.
7.16.26CuritePb3(UO2)8O8(OH)6 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pnma
7.16.27MasuyitePb(UO2)3O3(OH)2 · 3H2OOrth.
7.16.28VandendriesscheitePbU7O22 · 12H2O
7.16.29MetavandendriesscheitePbU7O22 · nH2O n < 12Orth.
7.16.30SayritePb2(UO2)5O6(OH)2 · 4H2OMon.
7.16.31Wölsendorfite(Pb,Ca)U2O7 · 2H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
7.16.32Clarkeite(Na,Ca,Pb)(UO2)O(OH) · 0-1H2OTrig.
7.16.33UranosphaeriteBi(UO2)O2(OH)Mon. 2/m

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 MetaschoepiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
CHRIST, C. L. & CLARK, J. R. (1960): Crystal chemical studies of some uranyl oxide hydrates. Am. Mineral. 45, 1026-1061.
CHRIST, C. L. (1965): Phase transformation and crystal chemistry of schoepite. Am. Mineral. 50, 235-239.
Finch, R. J., Hawthorne, F. C., Miller, M. L. & Ewing, R. C. (1997): Distinguishing among schoepite, [(UO2)8O2(OH)12](H2O)12, and related minerals by X-ray powder diffraction. Powder Diffraction 12, 230-238.
Finch, R.J. and F.C. Hawthorne (1998), Structural relations among schoepite, metaschoepite and "dehydrated schoepite." Canadian Mineralogist: 36: 831-845.
Sowder, A. G.; Clark, S. B.; Fjeld, R. A. (1999): The transformation of uranyl oxide hydrates: The effect of dehydration on synthetic metaschoepite and its alteration to becquerelite. Environ. Sci. Technol. 33, 3552-3557.
Weller, M.T., Light, M.E., and Gelbrich, T. (2000) Structure of uranium(VI) oxide hydrate, UO3·2H2O; synthetic meta-schoepite (UO2)4O(OH)6·5H2O. Acta Crystallographica: B56: 577-583.
Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.
Kubatko, Karrie-Ann, Katheryn Helean, Alexandra Navrotsky, and Peter C. Burns (2006), Thermodynamics of uranyl minerals: Enthalpies of formation of uranyl oxide hydrates: American Mineralogist: 91: 658-666.
Klingensmith, Amanda L.; Deely, Kathryn M.; Kinman, William S.; Kelly, Virginia; Burns, Peter C. (2007): Neptunium incorporation in sodium-substituted metaschoepite. American Mineralogist 92, 662-669.

Internet Links for MetaschoepiteHide

Localities for MetaschoepiteHide

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.
Australia
 
  • South Australia
    • Flinders Ranges
      • North Flinders Ranges
        • Arkaroola Region (Arkaroola Station)
          • Mt Painter area
2003, Brugger, J., Ansermet, S. & Pring, A. ' Uranium minerals from Mt Painter, Northern Flinders ranges, South Australia' Australian Journal of Mineralogy, vol. 9, n°1, pp 15-31; Brugger, J., Meisser, N., Etschmann, B., Ansermet, S., & Pring, A. (2011). Paulscherrerite from the Number 2 Workings, Mount Painter Inlier, Northern Flinders Ranges, South Australia:“Dehydrated schoepite” is a mineral after all. American Mineralogist, 96(2-3), 229-240.
Canada
 
  • Ontario
    • Haliburton Co.
      • Cardiff Township
Reiner Mielke and Travis Olds
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
          • Jáchymov (St Joachimsthal)
Lapis 2002(7/8), 59
Democratic Republic of Congo (Zaïre) (TL)
 
  • Katanga (Shaba)
    • Kambove District
      • Shinkolobwe
Am Min 50 (1965), 235
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
KOLITSCH, U. (1997): Ianthinit und weitere Neufunde aus der Grube Clara im mittleren Schwarzwald. - Erzgräber 11 (2), 76-88.
  • Saxony
    • Erzgebirge
      • Schwarzenberg District
        • Pöhla
Witzke, T.: Lapis 1996(6), 40-41
Japan
 
  • Honshu Island
    • Chugoku Region
      • Okayama Prefecture
Akira Kato (1973) Sakurai Koubutsu Hyohon, 34.
      • Shimane Prefecture
        • Unnan City
          • Daito
Akira Kato (1973) Sakurai Koubutsu Hyohon, 34.
Mexico
 
  • Chihuahua
    • Mun. de Aldama
      • Peña Blanca District
        • Sierra Peña Blanca
http://www.swri.org/4org/d20/ghs/PBlanca/mineral.html
Switzerland
 
  • Wallis (Valais)
    • Le Trient Valley
Meisser, N. (2012): La minéralogie de l'uranium dans le massif des Aiguilles Rouges. Matér. Géol. Suisse, Sér. géotech. 96, 183 p.
USA
 
  • Maine
    • Androscoggin Co.
      • Poland
King, V. T. and Foord, E. E., 1994, Mineralogy of Maine, Descriptive Mineralogy, volume 1, Maine Geological Survey, Augusta, Maine, USA, pp. 418 + 88 plates.
  • New Hampshire
    • Sullivan Co.
      • South Acworth
Dana 8:258
  • North Carolina
Foord,Eugene E.,Korzeb,Stanley L.,Litchte,Frederick E and Fitzpatrick,John J. (1997) Additional studies On Mixed Uranyl Oxide-Hydroxide Hydrate Alteration Products Of Uraninite From The Palermo And Ruggles Granitic Pegmatites,Grafton County,New Hampshire, The Canadian Mineralogist Vol.35 pp.145-151 (1997) pg.146,147,151.
  • Utah
    • San Juan Co.
      • White Canyon District
        • White Canyon
Min News 16:1 p1
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