Classification of Argutite |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 4/D.02-45
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| Nickel-Strunz 10th (pending) edition ID: | 4.DB.05
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates) D : Metal: Oxygen = 1:2 and similar B : With medium-sized cations; chains of edge-sharing octahedra |
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| Dana 8th edition ID: | 4.4.1.7
4 : SIMPLE OXIDES 4 : AX2 |
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| Hey's CIM Ref.: | 7.11.14
7 : Oxides and Hydroxides 11 : Oxides of Sn and Pb |
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| mindat.org URL: | http://www.mindat.org/min-330.html Please feel free to link to this page. |
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Type Occurrence of Argutite |
| Type Locality: | Plan d'Argut deposit, Argut-Dessus, Haute-Garonne, Midi-Pyrénées, France |
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| General Appearance of Type Material: | Subhedral crystals to 20 µm, included in sphalerite |
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| Year of Discovery: | 1983 |
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| Geological Setting of type material: | In a zinc deposit formed in metamorphosed lower Paleozoic sediments |
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| Associated Minerals at type locality: | |
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Physical Properties of Argutite |
| Diaphaneity (Transparency): | Translucent |
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| Hardness (Mohs): | 6 - 7 |
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| Density (calculated): | 6.28 g/cm3 |
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Crystallography of Argutite |
| Crystal System: | Tetragonal |
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| Class (H-M): | 4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal |
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| Space Group: | P42/mnm {P42/m 21/n 2/m} |
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| Cell Parameters: | a = 4.3975Å, c = 2.8625Å
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| Ratio: | a:c = 1 : 0.651 |
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| Unit Cell Volume: | V 55.36 ų (Calculated from Unit Cell) |
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| Z: | 2 |
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| Morphology: | Crystals are showing {111}, {100} and {101} |
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| Twinning: | Occasionally, on {101} |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 3.11 | | (100) | | 2.399 | | (60) | | 1.620 | | (50) | | 1.3045 | | (20) | | 1.5546 | | (18) | | 1.3004 | | (18) | | 2.199 | | (16) |
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| Comments: | Recorded on material from the type locality |
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Optical Data of Argutite |
| Type: | Uniaxial |
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| Anisotropism: | Distinct |
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| Reflectivity: | | 400 nm | R=14.8% | | 420 nm | R=13.7% | | 440 nm | R=12.6% | | 460 nm | R=11.6% | | 480 nm | R=11.2% | | 500 nm | R=11.0% | | 520 nm | R=11.0% | | 540 nm | R=11.0% | | 560 nm | R=11.0% | | 580 nm | R=10.9% | | 600 nm | R=10.9% | | 620 nm | R=10.9% | | 640 nm | R=10.9% | | 660 nm | R=10.9% | | 680 nm | R=11.0% | | 700 nm | R=11.0% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 14.8%. |
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| Colour in reflected light: | Light grey |
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| Comments: | The optical properties are very close to those of cassiterite. |
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Chemical Properties of Argutite |
| Formula: | |
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| Essential elements: | Ge, O |
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| All elements listed in formula: | Ge, O |
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| Analytical Data: | Averages of seven electron microprobe analyses of material from the type locality
GeO2 (95.82)
MnO2 (0.17)
FeO (1.20)
ZnO (3.03)
sum 100.22 wt.-% |
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| Empirical Formula: | |
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| Common Impurities: | Zn,Mn,Fe |
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Relationship of Argutite to other Species |
| Member of: | Rutile Group |
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Other Members of Group:
- + | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Related Minerals - Hey's Index Grouping:
- + | |
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Other Names for Argutite |
| Synonyms: | |
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| Other Languages: | |
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Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Argutite |
Reference List:
- + | Johan, Z., Oudin, E. and Picot, P. (1983): Analogues germanifères et gallifères des silicates et oxydes dans les gisements de zinc des Pyrénées centrales, France; argutite et carboirite, deux nouvelles espèces minérales. Tschermaks Mineralogische und Petrographische Mitteilungen 31, 97-119 (in French). - American Mineralogist (1984), 69, 406 (abstract).
Yamanaka, T., and Ogata, K. (1991): Structure refinement of GeO2 polymorphs at high pressures and temperatures by energy-dispersive spectra of powder diffraction. J. Appl. Cryst. 24, 111-118.
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 21. |
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Internet Links for Argutite |
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| External Links: | Look for Argutite on WebmineralLook for Argutite on Athena Mineralogy [Link dead]Look for Argutite on WikipediaLook for Argutite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseArgutite details from Handbook of Mineralogy (PDF) |
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Localities for Argutite |
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