Georgeite Mineral Data

General Georgeite Information

Chemical Formula:

Cu++5(CO3)3(OH)4•6(H2O)

Composition:

Molecular Weight = 639.86 gm

Copper 49.66 % Cu 62.16 % CuO

Hydrogen 2.21 % H 19.71 % H₂O

Carbon 5.63 % C 20.63 % CO₂

Oxygen 42.51 % O

______ ______

100.00 % 102.50 % = TOTAL OXIDE

Empirical Formula:

Cu₅(CO₃)₃(OH)₂•6(H₂O)

Environment:

Amorphous analog of malachite. Weathered tremolitic rock that contains disseminated copper and iron sulfides.

IMA Status:

Approved IMA 1979

Locality:

Carr Boyd mine, 100 km N of Kalgoorlie, WA, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for George Herbert Payne (1912-1989), past chief of the mineral division, Western Australian Government Chemical Laboratories.

Name Pronunciation:

Georgeite + Pronunciation

Georgeite Image

Images:

Georgeite

Comments: Pale blue crusts of georgeite with dark green atacamite.
Location: Carr-Boyd Nickel Mine, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Georgeite Crystallography

Crystal System:

Amorphous- No Crystals

Physical Properties of Georgeite

Color:

Light blue.

Density:

2.55

Diaphaneity:

Transparent to Subopaque

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

1-2 - Between Talc and Gypsum

Luster:

Vitreous - Dull

Streak:

light blue

Optical Properties of Georgeite

Gladstone-Dale:

CI meas= -0.076 (Fair) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2325,KC= 0.2162
Ncalc = 1.55

Optical Data:

Isotropic, n=1.593.

Calculated Properties of Georgeite

Electron Density:

Bulk Density (Electron Density)=2.49 gm/cc
note: Specific Gravity of Georgeite =2.55 gm/cc.

Fermion Index:

Fermion Index = 0.0008267926
Boson Index = 0.9991732074

Photoelectric:

PE_Georgeite= 21.50 barns/electron
U=PE_Georgeite x rElectron Density= 53.65 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Georgeite is Not Radioactive

Georgeite Classification

Dana Class:

16a.03.03.01 (16a)Carbonates - Hydroxyl or Halogen

(16a.03)where (A B)2 (XO3) Zq

(16a.03.03)Dana Group

16a.03.03.01 Georgeite Cu5(CO3)3(OH)4•6(H2O) None

Strunz Class:

05.BA.10 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

05.BA -With Cu, Co, Ni, Zn, Mg, Mn

05.BA.10 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

05.BA.10 Georgeite Cu5(CO3)3(OH)4•6(H2O) None

05.BA.10 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 2₁/a 2/m

05.BA.10 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri

05.BA.10 Pokrovskite Mg2(CO3)(OH)2•0.5(H2O) P 2₁/a 2/m

05.BA.10 Rosasite (Cu,Zn)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Chukanovite! Fe2(CO3)(OH)2 P 2₁/a 2/m

Other Georgeite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Georgeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Ask about Georgeite here :
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Print or Cut-and-Paste your Georgeite Specimen Label here :

Georgeite

Cu++5(CO3)3(OH)4•6(H2O)
Dana No: 16a.03.03.01 Strunz No: 05.BA.10
Locality:

Notes: