Classification of Direnzoite |
| IMA status: | Approved 2007 |
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| Strunz 9th edition ID: | 9.G0.
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| Nickel-Strunz 10th (pending) edition ID: | 9.GF.55
9 : SILICATES (Germanates) G : Tektosilicates with zeolitic H2O; zeolite family F : Other Rare Zeolites |
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| Dana 7th edition ID: | 77.1.44.1 |
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| mindat.org URL: | http://www.mindat.org/min-31408.html Please feel free to link to this page. |
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Type Occurrence of Direnzoite |
| Type Locality: | Mt Peylenc, Saint-Pierre-Eynac, Saint-Julien-Chapteuil, Haute-Loire, Auvergne, France |
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| General Appearance of Type Material: | spherical aggregates of fibrous micr-crystals |
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| Place of Conservation of Type Material: | not given in article |
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| Geological Setting of type material: | Found in cavities of a xenolitic rock |
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Physical Properties of Direnzoite |
| Lustre: | Vitreous, Silky |
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| Diaphaneity (Transparency): | Transparent, Translucent |
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| Colour: | colorless |
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| Streak: | white |
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| Hardness (Mohs): | 4½ |
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| Hardness Data: | Estimated |
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| Comment: | estimated as mean value between that of mordenite & mazzite |
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| Tenacity: | Brittle |
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| Cleavage: | Distinct/Good along the [010] |
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| Fracture: | Splintery |
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| Density (measured): | 2.12(3) g/cm3 |
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| Density (calculated): | 2.080(5) g/cm3 |
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Crystallography of Direnzoite |
| Crystal System: | Orthorhombic |
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| Class (H-M): | mmm (2/m 2/m 2/m) - Dipyramidal |
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| Space Group: | Pmmn (P21/m 21/m 2/n) |
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| Cell Parameters: | a = 7.57887(18) Å, b = 18.20098(57) Å, c = 26.15387(83) Å
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| Ratio: | a:b:c = 0.416 : 1 : 1.437 |
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| Unit Cell Volume: | V 3607.74 ų |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 9.077 | | (60) | | 7.846 | | (41) | | 4.234 | | (44) | | 3.549 | | (47) | | 3.484 | | (71) | | 3.269 | | (55) | | 3.182 | | (100) |
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Chemical Properties of Direnzoite |
| Formula: | |
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| All elements listed in formula: | Al, Ca, H, K, Mg, Na, O, Si |
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Relationship of Direnzoite to other Species |
Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Direnzoite |
| 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 Direnzoite |
| Reference List: | Galli, E. and A.F. Gualtieri: "Direnzoite, a new zeolite from the Massif Central (France): Description and crystal structure": American Mineralogist 93, 95-102 (2008) |
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Articles/Blogs about Direnzoite |
Internet Links for Direnzoite |
| Search Engines: |
Look for Direnzoite on Google
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| External Links: | Look for Direnzoite on WebmineralLook for Direnzoite on Athena MineralogyLook for Direnzoite on WikipediaLook for Direnzoite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Direnzoite in the Natural History Museum (London) online catalogue |
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| Mineral Dealers: | Search for - Direnzoite - on e-Rocks Mineral Sales & AuctionsSearch for Direnzoite on minvision.comBuy Minerals and Crystals from Crystalarium.comLapis Mineral MagazinFabre Minerals - search for Direnzoite specimensBuy from David K Joyce mineralsFind Direnzoite on www.crystalclassics.co.ukThe Arkenstone - Fine MineralsWright's Rock Shop - excellent mineral specimens since 1970Search for Direnzoite at Thames Valley MineralsFine Minerals from Dan Weinrich MineralsMineral Classics - Worldwide Collector Quality Minerals and Gems |
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Localities for Direnzoite |
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