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Georgeite

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Formula:
Cu2(CO3)(OH)2 · 6H2O
System:
Amorphous
Colour:
Sky-blue
Lustre:
Vitreous, Earthy
Hardness:
1 - 2
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.


Classification of Georgeite

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 Georgeite

Vitreous, Earthy
Diaphaneity (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 (Mohs):
1 - 2
Tenacity:
Brittle
Fracture:
Sub-Conchoidal
Density:
2.55(10) g/cm3 (Measured)    
Comment:
Sink float method

Optical Data of Georgeite

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

Chemical Properties of Georgeite

Formula:
Cu2(CO3)(OH)2 · 6H2O
IMA Formula:
Cu2CO3(OH)2
Elements listed in formula:

Crystallography of Georgeite

Crystal System:
Amorphous

Type Occurrence of Georgeite

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:

Relationship of Georgeite to other Species

5.BA.05AzuriteCu3(CO3)2(OH)2
5.BA.10Glaukosphaerite(Cu,Ni)2(CO3)(OH)2
5.BA.10Kolwezite(Cu,Co)2(CO3)(OH)2
5.BA.10MalachiteCu2(CO3)(OH)2
5.BA.10Mcguinnessite(Mg,Cu)2(CO3)(OH)2
5.BA.10NullaginiteNi2(CO3)(OH)2
5.BA.10PokrovskiteMg2(CO3)(OH)2
5.BA.10Rosasite(Cu,Zn)2(CO3)(OH)2
5.BA.10Zincrosasite(Zn,Cu)2(CO3)(OH)2
5.BA.10ChukanoviteFe22+(CO3)(OH)2
5.BA.15Aurichalcite(Zn,Cu)5(CO3)2(OH)6
5.BA.15HydrozinciteZn5(CO3)2(OH)6
5.BA.20HoldawayiteMn6(CO3)2(OH)7(Cl,OH)
5.BA.25DeferniteCa6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x<0.5)
5.BA.25UM1977-03-COSiO:CaClHCa10-11(CO3)7(SiO4)Cl1-2(OH)1-2
5.BA.30Loseyite(Mn2+,Zn,Mg)4Zn3(CO3)2(OH)10
5.BA.30Sclarite(Zn,Mg,Mn2+)4Zn3(CO3)2(OH)10

Other Names for Georgeite

Name in Other Languages:
German:Georgeit
Spanish:Georgeita

Other Information

Other Information:
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 Georgeite

Reference List:
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 Georgeite

mindat.org URL:
https://www.mindat.org/min-1676.html
Please feel free to link to this page.

Localities for Georgeite

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
 
  • 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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