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Pb3(UO2)6O8(OH)2 · 3H2O
Bright orange
For the geologist Reginald Claude Sprigg (1919-1994), formerly government geologist in South Australia, co-author of "Uranium deposits of South Australia (1954)", and founder of the popular Arkaroola Resort.
This page provides mineralogical data about Spriggite.

Classification of Spriggite

Approved 2002

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
C : With additional cations; with mainly UO2(O,OH)6 hexagonal polyhedra URL:
Please feel free to link to this page.

Type Occurrence of Spriggite

General Appearance of Type Material:
prismatic crystals to 0.15 mm, forming aggregates to 1 cm across
Place of Conservation of Type Material:
Musée géologique cantonal, Lausanne, Switzerland
Geological Setting of Type Material:
strongly oxidized samples of a quartz-hematite breccia enriched in uranium, niobium and rare earth element minerals

Physical Properties of Spriggite

Diaphaneity (Transparency):
Bright orange
pale orange
Hardness (Mohs):
on (100)
7.64 g/cm3 (Measured)    

Crystallography of Spriggite

Crystal System:
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 28.35Å, b = 11.99Å, c = 14Å
β = 104.25°
a:b:c = 2.364 : 1 : 1.168
Unit Cell Volume:
V 4,612.41 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
6.92 (60)
3.46 (80)
3.10 (100)

Chemical Properties of Spriggite

Pb3(UO2)6O8(OH)2 · 3H2O
All elements listed in formula:

Relationship of Spriggite to other Species

4.GC.05Clarkeite(Na,Ca,Pb)(UO2)O(OH) · 0-1H2O
4.GC.10Umohoite(UO2)MoO4 · 2H2O

Other Names for Spriggite

Name in Other Languages:

Other Information

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 Spriggite

Reference List:
Brugger J. et al. (2003), Australian Journal of Mineralogy: 9(1): 15-31.

Brugger J., Krivovichev, S.V., Berlepsch, P., Meisser, N., Ansermet, S., and Armbruster, T. (2004) Spriggite, Pb3[(UO2)6O8(OH)2](H2O)3, a new mineral with β-U3O8-type sheets: description and crystal structure. American Mineralogist 89: 339-347.

Lapis (2004): 29(3): 41.

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 Spriggite

Localities for Spriggite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Australia (TL)
  • South Australia
    • Flinders Ranges
      • North Flinders Ranges
        • Arkaroola Region (Arkaroola Station)
          • Mt Painter area
J. Brugger at al.: Australian Journal of Mineralogy 9(1):15-31 (2003); J. Brugger et al.: Amer. Min. 89:339-347 (2004); Lapis 29(3):41 (2004); 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.
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