Classification of Trattnerite |
| IMA status: | Approved 2002 |
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| Strunz 8th edition ID: | 8/E.22-
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| Nickel-Strunz 10th (pending) edition ID: | 9.CM.05
9 : SILICATES (Germanates) C : Cyclosilicates M : [Si6O18]12- 6-membered double rings (sechser-Doppelringe) |
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| mindat.org URL: | http://www.mindat.org/min-26354.html Please feel free to link to this page. |
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Type Occurrence of Trattnerite |
| Type Locality: | Stradner Kogel Mt., Wilhelmsdorf, Bad Gleichenberg, Styria, Austria |
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| Place of Conservation of Type Material: | Landesmuseum Joanneum Graz and in the Natural History Museum Vienna, Austria |
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| Geological Setting of type material: | Xenolith in nepheline syenite |
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| Associated Minerals at type locality: | |
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Physical Properties of Trattnerite |
| Lustre: | Vitreous |
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| Colour: | Blue |
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| Streak: | White |
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| Tenacity: | Brittle |
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| Cleavage: | Distinct/Good parallel to (001) is good, poor parallel to (100) |
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| Density (calculated): | 2.68 g/cm3 |
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Crystallography of Trattnerite |
| Crystal System: | Hexagonal |
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| Class (H-M): | 6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal |
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| Space Group: | P6/mcc {P6/m 2/c 2/c} |
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| Cell Parameters: | a = 10.050(1) Å, c = 14.338(2) Å
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| Ratio: | a:c = 1 : 1.427 |
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| Unit Cell Volume: | V 1,254.16 ų (Calculated from Unit Cell) |
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| Z: | 2 |
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| Morphology: | Hypidiomorphic, short prismatic to tabular crystals up to 1 mm. |
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Optical Data of Trattnerite |
| Type: | Uniaxial (-) |
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| RI values: | nω = 1.589() nε = 1.586(1) |
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| Maximum Birefringence: | δ = 0.003
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Moderate |
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| Pleochroism: | Visible |
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| Comments: | deep blue ({omega}) to yellowish-green ({epsilon}) |
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Chemical Properties of Trattnerite |
| Formula: | |
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| Essential elements: | Fe, Mg, O, Si |
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| All elements listed in formula: | Fe, K, Mg, O, Si |
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Relationship of Trattnerite to other Species |
| Member of Group: | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Trattnerite |
| 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 Trattnerite |
| Reference List: | Postl, W., Walter, F., Ettinger, K., Hauzenberger, C., Bojar, H.-P. (2004): Trattnerite, (Fe,Mg)2(Mg,Fe)3[Si12O30], a new mineral of the milarite group: mineral data and crystal structure. European Journal of Mineralogy, 16(2), 375-380.
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Internet Links for Trattnerite |
| Search Engines: |
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| External Links: | Look for Trattnerite on WebmineralLook for Trattnerite on Athena MineralogyLook for Trattnerite on WikipediaLook for Trattnerite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Trattnerite in the Natural History Museum (London) online catalogue |
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Localities for Trattnerite |
The 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
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