IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Paraschoepite

This page is currently not sponsored. Click here to sponsor this page.
Alfred Schoep
Formula:
UO3 · 2H2O
Colour:
Yellow, greenish-yellow
Lustre:
Adamantine
Crystal System:
Orthorhombic
Finch et al. (1997) state "Powder data labeled "paraschoepite" in the Powder Diffraction File do not correspond to the mineral of that name."

According to Brugger et al. (2010), paraschoepite is probably a mixture of metaschoepite, paulscherrerite and ianthinite.

Based on recent results of crystal structure studies on schoepite and related minerals, there is no further evidence for paraschoepite to exist (Plášil in prep.).


Hide all sections | Show all sections

Classification of ParaschoepiteHide

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
5.2.1.2

5 : OXIDES CONTAINING URANIUM OR THORIUM
2 : AXO3·xH2O
7.16.3

7 : Oxides and Hydroxides
16 : Oxides of U

Physical Properties of ParaschoepiteHide

Adamantine
Colour:
Yellow, greenish-yellow

Optical Data of ParaschoepiteHide

Type:
Biaxial
RI values:
nα = 1.700 nβ = 1.750 nγ = 1.770
2V:
Measured: 40° , Calculated: 62°
Max Birefringence:
δ = 0.070
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 ParaschoepiteHide

Formula:
UO3 · 2H2O
IMA Formula:
UO3 · (2-x)H2O

Crystallography of ParaschoepiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 14.23 Å, b = 18.98 Å, c = 15.04 Å
Ratio:
a:b:c = 0.75 : 1 : 0.792
Unit Cell V:
4,062.08 ų (Calculated from Unit Cell)

Type Occurrence of ParaschoepiteHide

Other Language Names for ParaschoepiteHide

Related Minerals - Nickel-Strunz GroupingHide

4.GA.05Metaschoepite(UO2)8O2(OH)12 · 10H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
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

5.2.1.1Metaschoepite(UO2)8O2(OH)12 · 10H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
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
7.16.4Metaschoepite(UO2)8O2(OH)12 · 10H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
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.
7.16.31WölsendorfitePb7(UO2)14O19(OH)4 · 12H2OOrth. 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 ParaschoepiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Schoep, A. & Stradiot, S. (1947): Paraschoepite and epiianthinite, two new uranium minerals from Shinkolobwe (Belgian Congo). American Mineralogist 32, 344-350.
Schoep, A. & Stradiot, S. (1948): Crystals of paraschoepite. American Mineralogist 33, 513-514.
American Mineralogist (1960): 45: 1026-1061.
Belova, L. N. & Boyarskaya, R. V. (1979): Two crystalline phases of schoepite or schoepite and paraschoepite? Izv. Akad. Nauk SSSR, Ser. Geol. (7), 140-142 (in Russian).
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.

Internet Links for ParaschoepiteHide

Localities for ParaschoepiteHide

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
 
  • 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 the Congo (TL)
 
  • Katanga (Shaba)
    • Kambove District
      • Shinkolobwe
[Am Min 45 (1960), 1026; Nickel & Nichols, 1991, p160 - "Mineral Reference Manual"]
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.
USA
 
  • New Hampshire
    • Sullivan Co.
      • South Acworth
Dana 8:258
  • New Mexico
    • Socorro Co.
Minerals of New Mexico 3rd ed.
McLemore, Virginia T., Zimmerer, Matthew, (2009) Magmatic activity and mineralization along the Capitan, Santa Rita, and Morenci lineaments in the Chupadera Mesa area, central New Mexico. New Mexico Geological Society Fall Field Conference Guidebook – 60 Geology of the Chupadera Mesa pp. 375-386
  • 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.
Uzbekistan
 
  • Namangan Viloyati
    • Chatkal-Kuraminskii Range
      • Pap
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Frost, R. L., Cejka, J., & Dickfos, M. J. (2009). Raman spectroscopic study of the uranyl minerals vanmeersscheite U (OH) 4 [(UO2) 3 (PO4) 2 (OH) 2]. 4H2O and arsenouranylite Ca (UO2)[(UO2) 3 (AsO4) 2 (OH) 2].(OH) 2.6 H2O. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 71(5), 1799-1803.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 21, 2018 17:42:55 Page generated: September 7, 2018 17:06:11
Go to top of page