Argutite Mineral Data

Argutite Mineral Data +

General Argutite Information

Chemical Formula:

GeO2

Composition:

Molecular Weight = 104.61 gm

Germanium 69.41 % Ge 100.00 % GeO₂

Oxygen 30.59 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

GeO₂

Environment:

In a zinc deposit formed in metamorphosed lower Paleozoic sediments.

IMA Status:

Approved IMA 1983

Locality:

From the Argut deposit, central Pyrenees, Haute-Garonne, France. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 9162

PDF 35-729

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Argutite Crystallography

Axial Ratios:

a:c = 1:0.65113

Cell Dimensions:

a = 4.3963, c = 2.8626, Z = 2; V = 55.33 Den(Calc)= 6.28

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/mnm

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

By Intensity(I/I_o): 3.11(1), 2.4(0.6), 1.62(0.5),

Crystal Structure:

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Haines J , Leger J M , Chateau C , Pereira A S , Physics and Chemistry of Minerals , 27 (2000) p.575-582, Structural evolution of rutile-type and CaCl2-type germanium dioxide, at high pressure, Sample: rutile-type, P = 0 GPa

View Additional jPOWD Structure files for Argutite
[1] [10] [11] [2] [3] [4] [5] [6] [7] [8] [9]

Physical Properties of Argutite

Color:

Grayish black.

Diaphaniety:

Transparent to Opaque

Luster:

Vitreous - Adamantine

Optical Properties of Argutite

Gladstone-Dale:

CI calc= 0.037 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1608,KC= 0.167

Optical Data:

Uniaxial (+), w=2.01, e=2.01, bire=0.0000.

RL Anisotrophism:

Distinct.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Argutite in Air**
λ	R	∑ R(λ)
400 nm	14.80
420 nm	13.70
440 nm	12.60
460 nm	11.60
480 nm	11.20
500 nm	11.00
520 nm	11.00
540 nm	11.00
560 nm	11.00
580 nm	10.90
600 nm	10.90
620 nm	10.90
640 nm	10.90
660 nm	10.90
680 nm	11.00
700 nm	11.00

**Calculated Relative Intensity Colors of Argutite in Air**
Relative Intensity	0%	80%	100%	160%	240%	320%	400%	480%	560%	640%	720%	800%
R

Calculated Properties of Argutite

Electron Density:

r_electron=5.76 gm/cc
note: r_Argutite=6.28 gm/cc.

Fermion Index

Fermion Index = 0.05428
Boson Index = 0.94572

Photoelectric:

PE_Argutite= 43.84 barns/electron
U=PE_Argutite x r_electron= 252.65 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Argutite is Not Radioactive

Argutite Classification

Dana Class:

4.4.1.7 (4)Simple Oxides

(4.4)with a cation charge of 4+ (A++++ O2)

(4.4.1)Rutile group (Tetragonal: P4/mnm)

4.4.1.1 Rutile TiO2 P 4/mnm 4/m 2/m 2/m

4.4.1.2 Ilmenorutile (Ti,Nb,Fe)O2 P 4/mnm 4/m 2/m 2/m

4.4.1.3 Struverite (Ti,Ta,Fe)O2 P 4/mnm 4/m 2/m 2/m

4.4.1.4 Pyrolusite MnO2 P 4/mnm 4/m 2/m 2/m

4.4.1.5 Cassiterite SnO2 P 4/mnm 4/m 2/m 2/m

4.4.1.6 Plattnerite PbO2 P 4/mnm 4/m 2/m 2/m

4.4.1.7 Argutite GeO2 P 4/mnm 4/m 2/m 2/m

4.4.1.8 Squawcreekite? (Fe,Sb,W)O4·(H2O) P 4/mnm 4/m 2/m 2/m

4.4.1.9 Stishovite SiO2 P 4/mnm 4/m 2/m 2/m

Strunz Class:

IV/D.02-45 IV - Oxides

IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds)

IV/D.02 - Rutile group, Rutile - Cassiterite - Platnerite series

IV/D.02-10 Rutile TiO2 P 4/mnm 4/m 2/m 2/m

IV/D.02-20 Pyrolusite MnO2 P 4/mnm 4/m 2/m 2/m

IV/D.02-30 Squawcreekite? (Fe,Sb,W)O4·(H2O) P 4/mnm 4/m 2/m 2/m

IV/D.02-40 Cassiterite SnO2 P 4/mnm 4/m 2/m 2/m

IV/D.02-45 Argutite GeO2 P 4/mnm 4/m 2/m 2/m

IV/D.02-50 Paratellurite TeO2 P 4₁2₁2,P 4₃2₁2 4 2 2

IV/D.02-60 Plattnerite PbO2 P 4/mnm 4/m 2/m 2/m

Other Argutite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Argutite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Argutite

GeO2
Dana No: 4.4.1.7 Strunz No: IV/D.02-45
Locality:

Notes: