Cuprosklodowskite
A valid IMA mineral species - grandfathered
This page kindly sponsored by IHO: fsq (Mia Lane)
About Cuprosklodowskite
Formula:
Cu(UO2)2(SiO3OH)2 · 6H2O
Colour:
Yellowish green to grass green or greenish yellow
Lustre:
Silky, Dull
Hardness:
4
Specific Gravity:
3.85
Crystal System:
Triclinic
Member of:
Name:
Named because it was originally thought to be the copper analogue of sklodowskite.
Type Locality:
This page provides mineralogical data about Cuprosklodowskite.
Unique Identifiers
Mindat ID:
1191
Long-form identifier:
mindat:1:1:1191:0
GUID
(UUID V4):
(UUID V4):
d992f79a-c57a-4e8a-84da-09ddd5985b76
IMA Classification of Cuprosklodowskite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1933
Classification of Cuprosklodowskite
9.AK.10
9 : SILICATES (Germanates)
A : Nesosilicates
K : Uranyl neso- and polysilicates
9 : SILICATES (Germanates)
A : Nesosilicates
K : Uranyl neso- and polysilicates
53.3.1.4
53 : NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
3 : Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
53 : NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
3 : Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
14.16.8
14 : Silicates not Containing Aluminum
16 : Silicates of U
14 : Silicates not Containing Aluminum
16 : Silicates of U
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Cskl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Cuprosklodowskite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Cuprosklodowskite
Silky, Dull
Transparency:
Transparent, Translucent
Colour:
Yellowish green to grass green or greenish yellow
Hardness:
4 on Mohs scale
Cleavage:
Distinct/Good
{100}
{100}
Density:
3.85(2) g/cm3 (Measured) 3.89 g/cm3 (Calculated)
Comment:
Calculated density from Plášil (2018)
Optical Data of Cuprosklodowskite
Type:
Biaxial (-)
RI values:
nα = 1.654 - 1.655 nβ = 1.664 - 1.667 nγ = 1.664 - 1.667
Max Birefringence:
δ = 0.010 - 0.012
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v
Pleochroism:
Visible
Comments:
X= nearly colorless
Y=Z= yellowish green
Y=Z= yellowish green
Chemistry of Cuprosklodowskite
Mindat Formula:
Cu(UO2)2(SiO3OH)2 · 6H2O
Crystallography of Cuprosklodowskite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.6549(5) Å, b = 7.0573(4) Å, c = 9.2344(8) Å
α = 70.429(6)°, β = 70.945(7)°, γ = 89.850(5)°
α = 70.429(6)°, β = 70.945(7)°, γ = 89.850(5)°
Ratio:
a:b:c = 0.943 : 1 : 1.308
Unit Cell V:
383.47 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Needles. Forms include {110}, {100}, and rarely {010}; frequently terminated by {0kl}, probably {031}.
Comment:
Cell parameters from Plášil (2018) with R1=3.75%.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000461 | Cuprosklodowskite | Rosenzweig A, Ryan R R (1975) Refinement of the crystal structure of cuprosklodowskite, Cu[(UO2)2(SiO3OH)2]*6(H2O) American Mineralogist 60 448-453 |  | 1975 | Musonoi mine, Kolwezi, Katanga, Zaire | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.18 Å | (100) |
| 4.09 Å | (90) |
| 2.97 Å | (80) |
| 4.82 Å | (70) |
| 3.52 Å | (60) |
| 2.21 Å | (60) |
| 2.72 Å | (50) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47f : [Uranyl (U⁶⁺) minerals] |
Geological Setting:
Secondary mineral in uranium deposits
Type Occurrence of Cuprosklodowskite
General Appearance of Type Material:
Small acicular needles.
Place of Conservation of Type Material:
University of Liµege, Liµege, Belgium, 16.655.
Geological Setting of Type Material:
Uranium deposit; in a fissure in a talcose argillaceous rock.
Reference:
Vaes, J.P. (1933) Sur un minéral de Kalongwe (Katanga). Annales de la Société Géologique de Belgique, 56, B331-B332.
Synonyms of Cuprosklodowskite
Other Language Names for Cuprosklodowskite
Relationship of Cuprosklodowskite to other Species
Member of:
Other Members of this group:
| Oursinite | Co(UO2)2(SiO3OH)2 · 6H2O | Orth. mmm (2/m 2/m 2/m) : Cmca |
| Sklodowskite | Mg(UO2)2(SiO3OH)2 · 6H2O | Mon. 2/m : B2/m |
Common Associates
Associated Minerals Based on Photo Data:
| 87 photos of Cuprosklodowskite associated with Malachite | Cu2(CO3)(OH)2 |
| 52 photos of Cuprosklodowskite associated with Vandenbrandeite | Cu(UO2)(OH)4 |
| 48 photos of Cuprosklodowskite associated with Sklodowskite | Mg(UO2)2(SiO3OH)2 · 6H2O |
| 39 photos of Cuprosklodowskite associated with Kasolite | Pb(UO2)(SiO4) · H2O |
| 39 photos of Cuprosklodowskite associated with Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| 38 photos of Cuprosklodowskite associated with Soddyite | (UO2)2SiO4 · 2H2O |
| 35 photos of Cuprosklodowskite associated with Rutherfordine | (UO2)CO3 |
| 34 photos of Cuprosklodowskite associated with Schoepite | (UO2)8O2(OH)12 · 12H2O |
| 33 photos of Cuprosklodowskite associated with Digenite | Cu9S5 |
| 20 photos of Cuprosklodowskite associated with Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
Related Minerals - Strunz-mindat Grouping
| 9.AK. | Orlite | Pb3(UO2)3(Si2O7)2 · 6H2O |
| 9.AK.05 | Soddyite | (UO2)2SiO4 · 2H2O |
| 9.AK.10 | Oursinite | Co(UO2)2(SiO3OH)2 · 6H2O |
| 9.AK.10 | Sklodowskite | Mg(UO2)2(SiO3OH)2 · 6H2O |
| 9.AK.15 | Boltwoodite | (K,Na)(UO2)(SiO3OH) · 1.5H2O |
| 9.AK.15 | Kasolite | Pb(UO2)(SiO4) · H2O |
| 9.AK.15 | Natroboltwoodite | Na(UO2)(SiO3OH) · H2O |
| 9.AK.15 | Parauranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 9.AK.15 | Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 9.AK.20 | Swamboite-(Nd) | Nd0.333[(UO2)(SiO3OH)](H2O)~2.5 |
| 9.AK.25 | Haiweeite | Ca(UO2)2[Si5O12(OH)2] · 6H2O |
| 9.AK.25 | Metahaiweeite | Ca(UO2)2Si6O15 · nH2O |
| 9.AK.30 | Weeksite | K2(UO2)2(Si5O13) · 4H2O |
| 9.AK.30 | Coutinhoite | ThxBa(1-2x)(UO2)2Si5O13 · (H2O)1+y (0 < x < 0.5 and 0 < y < (2+x)) |
| 9.AK.35 | Magnioursilite | Mg4(UO2)4(Si2O5)5(OH)6 · 20H2O |
| 9.AK.35 | Calcioursilite | Ca4(UO2)4(Si2O5)5(OH)6 · 15H2O |
| 9.AK.40 | Uranosilite | UO3 · 7SiO2 |
Other Information
Health Risks:
Contains uranium - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest. Avoid prolonged exposure in the proximity of the body. Store away from inhabited areas.
Internet Links for Cuprosklodowskite
mindat.org URL:
https://www.mindat.org/min-1191.html
Please feel free to link to this page.
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References for Cuprosklodowskite
Reference List:
Rosenweig, Abraham, Ryan, Robert R. (1975) Refinement of the crystal structure of cuprosklodowskite Cu[(UO2)2(SiO3OH)2]·6H2O. American Mineralogist, 60 (5-6) 448-453
Stohl, Frances V., Smith, Deane K. (1981) The crystal chemistry of the uranyl silicate minerals. American Mineralogist, 66 (5-6) 610-624
Burns, Peter C. (2005) U6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. The Canadian Mineralogist, 43 (6) 1839-1894 doi:10.2113/gscanmin.43.6.1839
Frost, Ray L., Čejka, Jiří, Weier, Matt L, Martens, Wayde (2006) Molecular structure of the uranyl silicates—a Raman spectroscopic study. Journal of Raman Spectroscopy, 37 (4). 538-551 doi:10.1002/jrs.1430
Plášil, Jakub (2018) Mineralogy, Crystallography and Structural Complexity of Natural Uranyl Silicates. Minerals, 8 (12) 551 doi:10.3390/min8120551(with refinement of cuprosklodowskite)
Localities for Cuprosklodowskite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Lucero et al. (1963) |
| Lucero et al. (1963) | |
| American Mineralogist: 46: 12-25. | |
| American Mineralogist: 51: 1-13 |
Canada | |
| Cowan (1962) |
| Hogarth (1951) |
Czech Republic | |
| Ondruš et al. (1989) +1 other reference |
| Pauliš P. et al. (Kutna Hora, issue 1) +1 other reference | |
| Duda |
| Möhn et al. (12/2021) | |
| Tvrdý et al. (2010) | |
| Plášil et al. (2014) | |
| Pauliš P. et al. (Kutna Hora, issue 1) |
| 70 (in German) +2 other references | |
| Sejkora et al. (2007) +1 other reference |
| Pauliš et al. (2007) |
| Pauliš P. et al. (Kutna Hora, issue 1) |
| Pauliš P. et al. (Kutna Hora, issue 1) |
DR Congo | |
| Deliens +2 other references |
| Deliens (1996) |
| Deliens +1 other reference |
| Deliens +2 other references |
| J.W. Anthony et al. (2003) |
| J.W. Anthony et al. (2003) | |
| Deliens | |
| Deliens |
| Daltry (1992) +2 other references | |
| |
France | |
| - (1998) |
| Bariand et al. (1993) +1 other reference |
| R. Pierrot |
| - (1998) | |
| - (1998) |
Germany | |
| Walenta (1992) |
| Aufschluss 1987 (8/9) +1 other reference |
| Weiß (1990) |
| Dill et al. (2010) | |
| Desor (06/2020) |
| Lapis 30 (7/8) | |
Iran | |
| Iranmanesh et al. (2018) |
Italy | |
| Campostrini I. (2013) |
| Campostrini et al. (2006) |
| Campostrini et al. (2005) |
Japan | |
| Kato (1973) |
Mexico | |
| Megaw (2023) |
Morocco | |
| |
Poland | |
| Siuda R. (Rudawy Janowickie Mts., Poland) |
Spain | |
| Abella et al. (2009) +1 other reference |
Switzerland | |
| |
| Stalder et al. (1998) |
| Stalder et al. (1998) |
| Ansermet (2012) |
UK | |
| P Haas |
| Golley et al. (1995) | |
| Golley et al. (1995) |
USA | |
| Murdoch (1966) |
| Van Nostrand Reinholt Press: 516. +2 other references |
| Van Nostrand Reinholt Press: 303 +2 other references |
| Castor et al. (2004) |
| Northrop et al. (1996) |
| Northrop et al. (1996) | |
| NMBMMR Memoir 15 Geology and Technology ... +3 other references | |
| Northrop et al. (1996) | |
| Sun et al. (1958) |
| Northrop et al. (1996) |
| New Mexico Bureau of Mines and Mineral ... |
| Bullock (1981) |
| Bullock (1981) | |
| Min News 17:7 p1 | |
| Kampf et al. (2018) |
| Page et al. (1956) +3 other references | |
| Bullock (1981) |
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Musonoi Mine, Kolwezi, Mutshatsha, Lualaba, DR Congo