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Georgeite

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Formula:
Cu2(CO3)(OH)2 · 6H2O
Colour:
Sky-blue
Lustre:
Vitreous, Earthy
Hardness:
1 - 2
Specific Gravity:
2.55
Crystal System:
Amorphous
Name:
For George Herbert Payne (1912-1989) past Chief of the Mineral Division, WA Government Chemical Laboratories.
Kondrat et al. (2016) report georgeite as a stable precursor to methanol-synthesis and LTS catalysts.


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Classification of GeorgeiteHide

Approved
5.BA.10

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
A : With Cu, Co, Ni, Zn, Mg, Mn
16a.3.3.1

16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
3 : (AB)2(XO3)Zq

Physical Properties of GeorgeiteHide

Vitreous, Earthy
Transparency:
Transparent, Opaque
Colour:
Sky-blue
Comment:
Ridgway Light Cerulean Blue 45-BGBb, Pale Cerulean Blue 45-BG-Bd to Calamine Blue 45-G-Bd
Streak:
pale blue
Hardness:
1 - 2 on Mohs scale
Tenacity:
Brittle
Fracture:
Sub-Conchoidal
Density:
2.55(10) g/cm3 (Measured)    
Comment:
Sink float method

Optical Data of GeorgeiteHide

Type:
Isotropic
RI values:
n = 1.593(2)
Max Birefringence:
δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:
Moderate

Chemical Properties of GeorgeiteHide

Formula:
Cu2(CO3)(OH)2 · 6H2O
IMA Formula:
Cu2CO3(OH)2

Crystallography of GeorgeiteHide

Crystal System:
Amorphous

Type Occurrence of GeorgeiteHide

General Appearance of Type Material:
Thin coatings on rock
Place of Conservation of Type Material:
WA Government Chemical Laboratories as MDC 5775. Additional specimens have been placed in the US National Museum and the Natural Science Museum, Tokyo, Japan
Associated Minerals at Type Locality:

Other Language Names for GeorgeiteHide

German:Georgeit
Spanish:Georgeita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Malachite2 photos of Georgeite associated with Malachite on mindat.org.
Glaukosphaerite2 photos of Georgeite associated with Glaukosphaerite on mindat.org.
Chalconatronite1 photo of Georgeite associated with Chalconatronite on mindat.org.
Bismutite1 photo of Georgeite associated with Bismutite on mindat.org.
Bismite1 photo of Georgeite associated with Bismite on mindat.org.
Beyerite1 photo of Georgeite associated with Beyerite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.BA.05AzuriteCu3(CO3)2(OH)2Mon. 2/m : P21/b
5.BA.10Glaukosphaerite(Cu,Ni)2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10Kolwezite(Cu,Co)2(CO3)(OH)2Tric.
5.BA.10MalachiteCu2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10Mcguinnessite(Mg,Cu)2(CO3)(OH)2
5.BA.10NullaginiteNi2(CO3)(OH)2Mon.
5.BA.10PokrovskiteMg2(CO3)(OH)2Mon.
5.BA.10Rosasite(Cu,Zn)2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10Zincrosasite(Zn,Cu)2(CO3)(OH)2Mon.
5.BA.10ChukanoviteFe2+2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.15Aurichalcite(Zn,Cu)5(CO3)2(OH)6Mon. 2/m : P21/m
5.BA.15HydrozinciteZn5(CO3)2(OH)6Mon. 2/m : B2/m
5.BA.20HoldawayiteMn6(CO3)2(OH)7(Cl,OH)Mon. 2/m : B2/m
5.BA.25DeferniteCa6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x<0.5)Orth. mmm (2/m 2/m 2/m) : Pnma
5.BA.25UM1977-03-COSiO:CaClHCa10-11(CO3)7(SiO4)Cl1-2(OH)1-2Mon.
5.BA.30Loseyite(Mn2+,Zn,Mg)4Zn3(CO3)2(OH)10Mon. 2/m
5.BA.30Sclarite(Zn,Mg,Mn2+)4Zn3(CO3)2(OH)10Mon. 2/m : B2/b

Other InformationHide

Notes:
The mineral is insoluble in water but soluble in dilute acids with effervescence.
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 GeorgeiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bridge, P. J., & Hey, M. (1979). from the Carr Boyd Mine, Western Australia. Mineralogical Magazine, 43, 97-8.
American Mineralogist: 64: 1330.
Mineralogical Magazine: 55: 163-166.
Kondrat, S.A., Smith, P.J., Wells, P.P., Chater, P.A., Carter, J.H., Morgan, D.J., Fiordaliso, E.M., Wagner, J.B., Davies, T.E., Li, Lu, Bartley, J.K., Taylor, S.H., Spencer, M.S., Kiely, C.J., Kelly, G.J., Park, M.J., Hutchings, G.J. (2016): Stable amorphous georgeite as a precursor to a high-activity catalyst. Nature 531, 83-87.

Internet Links for GeorgeiteHide

Localities for GeorgeiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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
 
  • Western Australia
    • Meekatharra Shire
      • Peak Hill Goldfield
        • Doolgunna Station
Murray Thompson, DeGrussa mine
    • Menzies Shire
      • Menangina Station
Min Mag (1979) 43, 97-98; Matthew J. Sciberras, Peter Leverett, Peter A. Williams, David E. Hibbs, Peter J. Downes, Mark D. Welch and Anthony R. Kampf (2013) Paratacamite-(Ni,Cu3(Ni,Cu)Cl2(OH)6, a new mineral from the Carr Boyd Rocks mine, Western Australia. Australian Journal of Mineralogy 17:39-44
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
            • Hilarion area
Solomos C., Voudouris P., Katerinopoulos A. (2004) Mineralogical studies of a bismuth-gold-antimony mineralization in Kamariza Lavrion. Bull Geol Soc Greece 36: 387-396.
UK
 
  • Wales
    • Gwynedd
      • Mt Snowdon
Mineralogical Magazine 1991 55 : 163-166; Pollard, A.M., Thomas, R.G., Williams, P.A., Bevins, R.E. & Turgoose, S., 1989. Carbonatian connellite, a new variety, from the Britannia Mine, North Wales, and from the Botallack Mine, Cornwall. Journal of the Russell Society. 2 (2), 23-27.
Mineral and/or Locality  
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