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Paraschoepite

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Formula:
UO
 
3
 · 2H
 
2
O
System:OrthorhombicColour:Yellow, greenish-yellow


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.

Classification of Paraschoepite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:4/H.01-60
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:5.2.1.2

5 : OXIDES CONTAINING URANIUM OR THORIUM
2 : AXO3·xH2O
Hey's CIM Ref.:7.16.3

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

Type Locality:Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)
Year of Discovery:1947

Physical Properties of Paraschoepite

Lustre:Adamantine
Colour:Yellow, greenish-yellow

Crystallography of Paraschoepite

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

Optical Data of Paraschoepite

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

Chart 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 Paraschoepite

Formula:
UO
 
3
 · 2H
 
2
O
Essential elements:H, O, U
All elements listed in formula:H, O, U

Relationship of Paraschoepite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.GA.05Metaschoepite
UO
 
3
 · 1-2H
 
2
O
4.GA.05Schoepite
(UO
 
2
)
 
8
O
 
2
(OH)
 
12
 · 12H
 
2
O
4.GA.05Paulscherrerite
UO
 
2
(OH)
 
2
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
7.16.2Schoepite
(UO
 
2
)
 
8
O
 
2
(OH)
 
12
 · 12H
 
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+
 
,REE,Th,Ca)(Ti,Fe
3+
 
,Nb)
 
2
(O,OH)
 
6
7.16.24Fourmarierite
Pb(UO
 
2
)
 
4
O
 
3
(OH)
 
4
 · 4H
 
2
O
7.16.25Richetite
Pb(UO
 
2
)
 
4
O
 
5
 · 4H
 
2
O
7.16.26Curite
Pb
 
3
(UO
 
2
)
 
8
O
 
8
(OH)
 
6
 · 3H
 
2
O
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)(UO
 
2
)O(OH) · 0-1H
 
2
O
7.16.33Uranosphaerite
Bi(UO
 
2
)O
 
2
(OH)

Other Names for Paraschoepite

Other Languages:
German:Paraschoepit
Spanish:Paraschoepita

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 Paraschoepite

Reference List:

- +
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 Paraschoepite

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    • Localities for Paraschoepite

    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.
    Hide Locality List
    (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.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
          • Dubí
    		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)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • 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.
        • Acworth
    		Dana 8:258
    • New Mexico
      • Socorro Co.
    		Minerals of New Mexico 3rd ed.
    • 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
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 20th Jun 2011 02:55:11
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