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Spriggite

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About SpriggiteHide

Reginald C. Sprigg
Formula:
Pb3(UO2)6O8(OH)2 · 3H2O
Colour:
Bright orange
Lustre:
Vitreous
Hardness:
4
Specific Gravity:
7.64
Crystal System:
Monoclinic
Name:
Named in honor of Reginald Claude Sprigg (1 March 1919, Yorketown, South Australia, Australia - 2 December 1994, Glasgow, Scotland), government geologist in South Australia, and conservationalist. He discovered the Pre-Cambrian fossils at Ediacara Hills and is co-author of "Uranium deposits of South Australia". He also founded the popular Arkaroola Wilderness Sanctuary.
Sheets in the structure are similar to those in ianthinite, rameauite, and wyartite.


Classification of SpriggiteHide

Approved
Approval Year:
2002
4.GC.15

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 SpriggiteHide

Vitreous
Transparency:
Transparent
Colour:
Bright orange
Streak:
pale orange
Hardness:
Tenacity:
Brittle
Cleavage:
Distinct/Good
on (100)
Fracture:
Irregular/Uneven
Density:
7.64 g/cm3 (Measured)    

Chemical Properties of SpriggiteHide

Formula:
Pb3(UO2)6O8(OH)2 · 3H2O

Crystallography of SpriggiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 28.35 Å, b = 11.99 Å, c = 14 Å
β = 104.25°
Ratio:
a:b:c = 2.364 : 1 : 1.168
Unit Cell V:
4,612.41 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.92 (60)
3.46 (80)
3.10 (100)

Type Occurrence of SpriggiteHide

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
Associated Minerals at Type Locality:

Synonyms of SpriggiteHide

Other Language Names for SpriggiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Uranophane-β1 photo of Spriggite associated with Uranophane-β on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.GC.05Clarkeite(Na,Ca,Pb)(UO2)O(OH) · 0-1H2OTrig.
4.GC.10Umohoite(UO2)MoO4 · 2H2OTric.

Fluorescence of SpriggiteHide

Other InformationHide

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 SpriggiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Brugger, J. et al. (2003), Australian Journal of Mineralogy: 9(1): 15-31.
Grice, J.D., Ferraris, G. (2003) New minerals approved in 2002 and nomenclature modifications approved in 1998-2002 by the Commission on the New Minerals and Mineral Names, International Mineralogical Association. The Canadian Mineralogist: 41: 795-802.
Grice, J.D., Ferraris, G. (2003) New minerals approved in 2002 and nomenclature modifications approved 1998-2002 by the commission on new minerals and mineral names, International Mineralogical Association. American Mineralogist: 88: 1620-1624.
Brugger J., Krivovichev, S.V., Berlepsch, P., Meisser, N., Ansermet, S., 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.
Mandarino, J.A. (2004) New minerals. The Canadian Mineralogist: 42: 1241-1260.
Lapis (2004): 29(3): 41.
Burns, P.C. (2005) U6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for SpriggiteHide

Localities for SpriggiteHide

ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia (TL)
 
  • South Australia
    • Flinders Ranges
      • North Flinders Ranges
        • Arkaroola Region (Arkaroola Wilderness Sanctuary; 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.
Mineral and/or Locality  
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