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Schoepite

Big Photo

La Dorgissière Mine, Saint-Amand-sur-Sèvre, Deux-Sèvres, Poitou-Charentes, France
© JM. Johannet

Show Schoepite Photos (30)
Formula:
(UO
 
2
)
 
8
O
 
2
(OH)
 
12
 · 12H
 
2
O
System:OrthorhombicColour:Amber-, lemon- or ...
Hardness:2½
Name:Named after Alfred Schoep (1881-1966) Professor of Mineralogy, University of Ghent, Belgium.


Schoepite Group

Classification of Schoepite

IMA status:Approved
Strunz 8th edition ID:4/H.01-40
Nickel-Strunz 10th (pending) edition ID:4.GA.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
A : Without additional cations
Dana 8th edition ID:5.2.1.3

5 : OXIDES CONTAINING URANIUM OR THORIUM
2 : AXO3·xH2O
Hey's CIM Ref.:7.16.2

7 : Oxides and Hydroxides
16 : Oxides of U
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Type Occurrence of Schoepite

Type Locality:Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)
Year of Discovery:1923

Physical Properties of Schoepite

Lustre:Adamantine
Diaphaneity (Transparency):Transparent
Colour:Amber-, lemon- or sulphur-yellow
Streak:Yellow
Hardness (Mohs):2½
Cleavage:Perfect
{001} perfect
Density (measured):4.8 g/cm3
Density (calculated):4.83 g/cm3

Crystallography of Schoepite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:a = 14.33Å, b = 16.79Å, c = 14.73Å
Ratio:a:b:c = 0.853 : 1 : 0.877
Unit Cell Volume:V 3,544.05 ų (Calculated from Unit Cell)
Morphology:Usually tabular {001}; also equant or short prismatic [001].

Optical Data of Schoepite

Type:Biaxial (-)
RI values: nα = 1.690 nβ = 1.714 nγ = 1.735
2V:Measured: 89°
Maximum Birefringence:δ = 0.045

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:weak to moderate
Pleochroism:Visible
Comments:X = c = Colourless
Y = b = Lemon-yellow
Z = a = Lemon-yellow

Chemical Properties of Schoepite

Formula:
(UO
 
2
)
 
8
O
 
2
(OH)
 
12
 · 12H
 
2
O
Essential elements:H, O, U
All elements listed in formula:H, O, U

Relationship of Schoepite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.GA.05Metaschoepite
UO
 
3
 · 1-2H
 
2
O
4.GA.05Paraschoepite
UO
 
3
 · 2H
 
2
O
4.GA.10Ianthinite
U
4+
 
(UO
 
2
)
 
5
O
 
7
 · 10H
 
2
O
4.GA.15Metastudtite
UO
 
4
 · 2H
 
2
O
4.GA.15Studtite
[(UO
 
2
)(O
 
2
)(H
 
2
O)
 
2
]·H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
7.16.1Uraninite
UO
 
2
7.16.3Paraschoepite
UO
 
3
 · 2H
 
2
O
7.16.4Metaschoepite
UO
 
3
 · 1-2H
 
2
O
7.16.5Metastudtite
UO
 
4
 · 2H
 
2
O
7.16.6Studtite
[(UO
 
2
)(O
 
2
)(H
 
2
O)
 
2
]·H
 
2
O
7.16.7Ianthinite
U
4+
 
(UO
 
2
)
 
5
O
 
7
 · 10H
 
2
O
7.16.8Compreignacite
K
 
2
(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 7H
 
2
O
7.16.9Vandenbrandeite
Cu(UO
 
2
)(OH)
 
4
7.16.10Roubaultite
Cu
 
2
(UO
 
2
)
 
3
(OH)
 
10
 · 5H
 
2
O
7.16.11Becquerelite
Ca(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 8H
 
2
O
7.16.12Rameauite
K
 
2
Ca(UO
 
2
)
 
6
(OH)
 
16
 · H
 
2
O
7.16.13Agrinierite
K
 
2
(Ca,Sr)(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 5H
 
2
O
7.16.14Protasite
Ba(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 3H
 
2
O
7.16.15Billietite
Ba(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 4-8H
 
2
O
7.16.16Bauranoite
Ba(UO
 
2
)
 
2
(OH)
 
6
 · 1-2H
 
2
O
7.16.17Metacalciouranoite
(Ca,Ba,Pb,K
 
2
)U
 
2
O
 
7
·2H
 
2
O
7.16.18Calciouranoite
(Ca,Ba,Pb)U
 
2
O
 
7
·5H
 
2
O
7.16.19Orthobrannerite
U
4+
 
U
6+
 
Ti
 
4
O
 
12
(OH)
 
2
7.16.20Thorutite
(Th,U,Ca)Ti
 
2
(O,OH)
 
6
7.16.21Davidite-(La)
(La,Ce)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
7.16.22Davidite-(Ce)
(Ce,La)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
7.16.23Brannerite
(U
4+
 
,Ca)(Ti,Fe
3+
 
)
 
2
O
 
6
7.16.24Fourmarierite
PbU
 
4
O
 
13
·4H
 
2
O
7.16.25Richetite
PbU
 
4
O
 
13
·4H
 
2
O
7.16.26Curite
Pb
 
3+x
(H
 
2
O)
 
2
[(UO
 
2
)
 
4
O
 
4+x
(OH)
 
3-x
]
 
2
7.16.27Masuyite
Pb(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 3H
 
2
O
7.16.28Vandendriesscheite
PbU
 
7
O
 
22
·12H
 
2
O
7.16.29Metavandendriesscheite
PbU
 
7
O
 
22
·nH
 
2
O n < 12
7.16.30Sayrite
Pb
 
2
(UO
 
2
)
 
5
O
 
6
(OH)
 
2
·4H
 
2
O
7.16.31Wölsendorfite
(Pb,Ca)U
 
2
O
 
7
·2H
 
2
O
7.16.32Clarkeite
(Na,Ca,Pb)
 
2
U
 
2
(O,OH)
 
7
7.16.33Uranosphaerite
Bi(UO
 
2
)O
 
2
(OH)

Other Names for Schoepite

Synonyms:
EpiianthiniteEpi-IanthiteSchepite-I
Other Languages:
German:Epiianthinit
Epijanthinit
Schoepit
Russian:Скупит
Spanish:Epiianthinita
Schoepita

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 Schoepite

Reference List:Walker (1923), American Mineralogist: 8: 67.

Ungemach (1929), Soc. géol. Belgique, Ann. publ. Congo belge 52: C75.

Schoep, A. (1930), Ann. mus. Congo belge: 1(1), no. 2: 18.

Palache, C. (1934), American Mineralogist: 19: 310.

Billiet and de Jong (1935) Natuurw. Tijdschr.: 17: 157.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 627-628.

American Mineralogist (1960): 45: 1026-1061.

Vochten, R. and L. Van Haverbeke (1990), Transformation of schoepite into the uranyl oxide hydrates: becquerelite, billietite and wölsendorfite: Mineralogy and Petrology: 43: 65-72.

Finch, R.J., M. Cooper, F.C. Hawthorne, and R.C. Ewing (1996), The crystal structure of schoepite: Canadian Mineralogist: 34: 1071-1088.

Sowder, A.G., S.B. Clark, and R.A. Fjeld (1996), The effect of silica and phosphate on the transformation of schoepite to becquerelite and other uranyl phases: Radiochimica Acta: 74: 45-49.

Finch, R.J. and F.C. Hawthorne (1998), Structural relations among schoepite, metaschoepite and "dehydrated schoepite." Canadian Mineralogist: 36: 831-845.

Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for Schoepite

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  • Look for Schoepite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Schoepite in the Natural History Museum (London) online catalogue
  • Schoepite details from Handbook of Mineralogy (PDF)
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    Localities for Schoepite

    Hide Locality List
    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.
    (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.
    Argentina
     
    • Córdoba
      • Punilla Department
        • Tanti
          • Cerro Blanco pegmatite district
    		Mr. Nelson Valenzuela.
    Australia
     
    • South Australia
      • Flinders Ranges
        • North Flinders Ranges
          • Mt Painter area
            • Radium Ridge
    		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
    • Tasmania
      • Rossarden district
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
          • Ostrov
    		Lapis 2002(7/8), 63-65
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
          • Klášterec nad Ohří
    		No reference listed
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Central area
          • Shinkolobwe
    		Am Min 50 (1965), 235; Can Min 34 (1996), 1071
        • Western area
          • Kolwezi
            • Kamoto
    Rob Lavinsky specimen
    No reference listed
    France
     
    • Auvergne
      • Puy-de-Dôme
        • Puy-Guillaume
          • Lachaux
    		Le Règne Minéral, Hors Série IV, 1998
    • Languedoc-Roussillon
      • Hérault
        • Lodève
    		Le Règne Minéral, Hors Série IV (1998)
    [Le Cahier des Micromonteurs, 1998, 2, p.13-26]
    [Le Règne Minéral 1997, 13, p.5-18]
    Le Règne Minéral, Hors Série IV (1998)
    • Limousin
      • Corrèze
        • Davignac
    		Patrice Queneau Collection
      • Haute-Vienne
        • Compreignac
    		Le Règne Minéral, Hors Série IV, 1998
    Le Règne Minéral, Hors Série IV (1998)
    • Poitou-Charentes
      • Deux-Sèvres
        • La Chapelle Largeau
    		Le Cahier des micromonteurs, 2002, N°75, pp 8-25
        • Saint-Amand-sur-Sèvre
    		Le Cahier des micromonteurs, 2002, N°75, pp 8-25
    • Rhône-Alpes
      • Loire
        • St Priest-la-Prugne
    		Le Règne Minéral, Hors Série IV, 1998
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Baden-Baden
          • Müllenbach U deposit
    		K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
        • Menzenschwand
    		Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German)
    • Bavaria
      • Upper Palatinate
        • Schwandorf
          • Wölsendorf Fluorite mining District
            • Wölsendorf East District (Wölsendorf - Nabburg District)
    		No reference listed
    • Rhineland-Palatinate
      • Hunsrück Mts
        • Birkenfeld
          • Ellweiler
    		Aufschluss 69/(7+8), Lapis 79/(7+8)
    • Saxony
      • Erzgebirge
    		Lapis 30(7/8):78-80 (2005)
    Hungary
     
    • Baranya Co.
      • Mecsek Mts.
    		Szakáll & Jánosi: minerals of hungary, 1995
    Szakáll & Jánosi: Minerals of Hungary, 1995
    Italy
     
    • Lombardy
      • Bergamo Province
        • Seriana Valley
          • Goglio Valley
            • Valgoglio
    		Daniele Ravagnani - I giacimenti uraniferi italiani - Gruppo Min. Lombardo - Museo Civico di Storia Naturale di Milani, 1974
      • Sondrio Province
        • Novate Mezzola
          • Codera Valley
    		De Michele V., Zezza U. (1979) - Le pegmatidi dell'alta Val codera (Sondrio) nell'area di Punta trubinasca - Atti Soc. Ital. Sc. nat., Museo Civico di Storia Naturale di Milano, Vol. 120, n. 1-2, pp. 180-194
    • Piedmont
      • Cuneo Province
        • Roburent
          • San Giacomo
            • I Cardin
    		Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): MInerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo " F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
      • Verbano-Cusio-Ossola Province
        • Ossola Valley
          • Antrona Valley
            • Montescheno
    		Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
    • Trentino-Alto Adige
      • Trento Province
        • 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.
        • Daone
          • Limes
    		Campostrini, I., Demartin, F., Gramaccioli, C.M. (2005): Val Daone. Minerali secondari del giacimento uranifero presso Limes, Daone (TN). Rivista Mineralogica Italiana, 4/2005, 228-240.
    Japan
     
    • Honshu Island
      • Chugoku Region
        • Okayama Prefecture
    		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
    Norway
     
    • Aust-Agder
      • Evje og Hornnes
    		J. Hysingjord (1978, letter 11/1); Neumann (1985, p. 89).
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Bregaglia Valley (Bergell)
        • Albigna Valley
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 364.
    Tajikistan
     
    • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
      • Khodzhent (Leninabad)
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    UK
     
    • England
      • Cornwall
        • St Just District
          • Botallack - Pendeen Area
            • Truthwall
    		No reference listed
    • Scotland
      • Dumfries & Galloway (Kirkcudbrightshire)
        • Dalbeattie
    		Livingstone, 2002, p. 182
        • Needle's Eye
    		BMS Database
    USA
     
    • Arizona
      • Apache Co.
        • Navajo Indian Reservation
          • Monument Valley
            • Monument No. 2 channel
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 364; Frondel, C. (1956), Mineral composition of gummite, Am.Min.: 41: 539-568; Frondel, C. (1958), Systematic mineralogy of uranium and thorium, USGS Bull. 1064: 78.
      • Coconino Co.
        • Cameron District
    		No reference listed
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 364; Austin, S.R. (1964), Mineralogy of the Cameron area, Coconino Co., AZ, US Atomic Energy Comm. RME 99, Tech. Inf. Serv., Oak Ridge, TN: 99.
      • Yavapai Co.
        • Bradshaw Mts (Bradshaw Range)
          • Castle Creek District
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 364; Granger, H.C. & R.B. Raup (1962), Recon. Study of Uranium deposits in AZ, USGS Bull. 1147-A: A44-A46.
    • Colorado
      • Fremont Co.
        • Devils Hole Area
    		Minerals of Colorado (1997) E.B. Eckels
    Minerals of Colorado (1997) E.B. Eckels
      • Gunnison Co.
        • Marshall Pass District
    		Minerals of Colorado (1997) E.B. Eckels
      • Mesa Co.
    		Minerals of Colorado (1997) Eckels, E. B.
      • Moffat Co.
        • Maybell District
          • Maybell Mines
    		Minerals of Colorado (1997) Eckels, E. B.
    Minerals of Colorado (1997) Eckels, E. B.
      • Park Co.
        • Lake George (Badger Flats) Area
    		Minerals of Colorado (1997) Eckels, E. B.
      • Saguache Co.
        • Marshall Pass District
    		Minerals of Colorado (1997) Eckels, E. B.; Am Min 50:909-923; Am Min 50:909-923
    • Maine
      • Androscoggin Co.
        • Poland
    		No reference listed
      • Oxford Co.
        • Albany
    		King, V. (ed), 2009, Maine Feldspar, Families, and Feuds.
    King, V. (ed.), 2009, Maine feldspar, Families, and Feuds
        • Buckfield
    		Fred Davis discovery specimen and photograph
        • Newry
    		King, V. and Foord, E., 1994, 2000, Mineralogy of Maine, volume 1 and 2, with updates by Van King.
    King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.
    King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.
        • Peru
    		King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.
      • Sagadahoc Co.
        • Topsham
    		King & Foord, 1994. Mineralogy of Maine, V. 1.; King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.
    • New Hampshire
      • Grafton Co.
        • Grafton
    		Clifford Frondel (1956) Mineral Composition of Gummite, American Mineralogist 41:539-568.
        • Groton
    		Whitmore & Lawrence, 2004. The Pegmatite Mines Known As Palermo, p.95.
      • Sullivan Co.
        • Acworth
    		Januzzi, R.E. and Seaman, David M. (1976) Mineral Localities Of Connecticut and Southern New York State and Pegmatite Minerals of the World.
    • New Mexico
      • Cibola Co.
    		Northrop, Minerals of New Mexico, 3rd. rev. ed. (1996)
    NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region
    • Texas
      • Karnes Co.
    		Smith, A.E. (1991), Texas Mineral Locations Index, Rocks & Min.: 66(3).
    • Utah
      • Emery Co.
        • San Rafael District (San Rafael Swell)
          • Delta
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
          • Green Vein Mesa
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
      • San Juan Co.
        • White Canyon District
          • Red Canyon
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
    UGMS Bull 117 Minerals and Mineral Localities of Utah
          • White Canyon
            • Copper Point
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
            • Deer Flat
    		Minerals and Mineral Localities of Utah. Utah Department fo Natural Resources Bulletin 117. Jan. 1981
    Min News 16:1 p1
      • Wayne Co.
        • Fruita
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
    • Wyoming
      • Fremont Co.
        • Gas Hills District
    		Am Min 51:1567-1578
    Uzbekistan
     
    • Namangan Viloyati
      • Chatkal-Kuraminskii Range
        • Pap
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