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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.
Sheets in the structure are similar to those in ianthinite, rameauite, and wyartite.

Classification of Spriggite

Approval Year:

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

Physical Properties of Spriggite

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

Chemical Properties of Spriggite

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

Crystallography of Spriggite

Crystal System:
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 28.35 Å, b = 11.99 Å, c = 14 Å
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)

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

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 URL:
Please feel free to link to this page.

Localities for Spriggite

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.
(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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