Carboirite-III Mineral Data

Carboirite-III Mineral Data

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General Carboirite-III Information

Chemical Formula:

Fe++Al2GeO5(OH)2

Composition:

Molecular Weight = 296.43 gm

Aluminum 18.20 % Al 34.40 % Al₂O₃

Iron 18.84 % Fe 24.24 % FeO

Germanium 24.49 % Ge 35.29 % GeO₂

Hydrogen 0.68 % H 6.08 % H₂O

Oxygen 37.78 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺Al₂GeO₅(OH)₂

IMA Status:

Approved IMA 1983

Locality:

Link to MinDat.org Location Data.

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Carboirite-III Crystallography

Axial Ratios:

a:b:c =1.7082:1:1.6692

Cell Dimensions:

a = 9.513, b = 5.569, c = 9.296, Z = 4; alpha = 96.08°, beta = 101.52°, gamma = 89.45° V = 479.82 Den(Calc)= 4.10

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: C1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.528(1), 2.48(0.9), 2.728(0.9),

Physical Properties of Carboirite-III

Color:

Green.

Hardness:

6 - Orthoclase

Luster:

Vitreous (Glassy)

Optical Properties of Carboirite-III

Gladstone-Dale:

CI calc= 0.087 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1793,KC= 0.1964

Optical Data:

Biaxial (+), a=1.731, b=1.735, g=1.74, bire=0.0090, 2V(Calc)=84, 2V(Meas)=7.

Calculated Properties of Carboirite-III

Electron Density:

r_electron=3.93 gm/cc
note: r_{Carboirite-III}=4.10 gm/cc.

Fermion Index

Fermion Index = 0.02328
Boson Index = 0.97672

Photoelectric:

PE_{Carboirite-III}= 21.10 barns/electron
U=PE_{Carboirite-III} x r_electron= 82.86 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Carboirite-III is Not Radioactive

Carboirite-III Classification

Dana Class:

7.11.6.1 (7)Multiple Oxides

(7.11)as titano-oxides with [4] and [6] substitutions

(7.11.6)Dana Group

7.11.6.1 Carboirite-III FeAl2GeO5(OH)2 C1 1

Strunz Class:

IV/C.22-10 IV - Oxides

IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)

IV/C.22 - Carboirite series

IV/C.22-10 Carboirite-III FeAl2GeO5(OH)2 C1 1

IV/C.22-10* Carboirite-VIII Fe(Al,Ge)2O[(Ge,Si)O4](OH)2 C1 1

Other Carboirite-III Information

References:

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

See Also:

Links to other databases for Carboirite-III :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Carboirite-III Specimen Label here :

Carboirite-III

Fe++Al2GeO5(OH)2
Dana No: 7.11.6.1 Strunz No: IV/C.22-10
Locality:

Notes: