Classification of Melliniite |
| IMA status: | Approved 2005 |
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| Strunz 8th edition ID: | 1/A.11-40
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| Nickel-Strunz 10th (pending) edition ID: | 1.BD.20
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) B : Metallic Carbides, Silicides, Nitrides and Phosphides D : Phosphides |
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| Dana 7th edition ID: | 1.1.31.4 |
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| mindat.org URL: | http://www.mindat.org/min-28998.html Please feel free to link to this page. |
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Type Occurrence of Melliniite |
| Type Locality: | NWA 1054 meteorite, Erfoud (Erfud), Er Rachidia Province, Meknès-Tafilalet Region, Morocco |
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| General Appearance of Type Material: | anhedral to subhedral grains up to 100 µm across |
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| Place of Conservation of Type Material: | Museum of Planetary Science, Prato, Italy (No. MSP2366) |
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| Geological Setting of type material: | Primitive acapulcoite achondrite with low terrestrial weathering grade and shock stage |
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| Associated Minerals at type locality: | |
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Physical Properties of Melliniite |
| Lustre: | Metallic |
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| Diaphaneity (Transparency): | Opaque |
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| Streak: | Grey |
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| Hardness (Mohs): | 8 - 8½ |
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| Hardness (Vickers): | VHN500=440 - 454 kg/mm2 |
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| Tenacity: | Brittle |
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| Fracture: | Irregular/Uneven |
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| Density (measured): | 7.882 g/cm3 |
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| Density (calculated): | 7.88 g/cm3 |
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Crystallography of Melliniite |
| Crystal System: | Isometric |
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| Class (H-M): | 2 3 - Tetartoidal |
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| Space Group: | P21 3 |
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| Cell Parameters: | a = 6.025Å
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| Unit Cell Volume: | V 218.71 ų |
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| Z: | 4 |
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Optical Data of Melliniite |
| Type: | Isotropic |
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| Bireflectance: | No bireflectance |
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| Reflectivity: | | 471.1nm | R=60.56% | | 548.3nm | R=50.44% | | 586.6nm | R=52.51% | | 652.3nm | R=55.94% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 60.56%. |
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| Colour in reflected light: | Cream-yellowish |
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| Internal Reflections: | None |
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| Pleochroism: | Non-pleochroic |
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Chemical Properties of Melliniite |
| Formula: | |
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| All elements listed in formula: | Fe, Ni, P |
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Relationship of Melliniite to other Species |
Related Minerals - Nickel-Strunz Grouping):
- + | |
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Related Minerals - Dana Grouping):
- + | |
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Other Names for Melliniite |
| 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 Melliniite |
| Reference List: | Moggi-Cecchi, V., Bindi, L., Pratesi, G. (2005): "A new iron-nickel phosphide from the Northwest Africa 1054 Meteorite", 68th Annual Meteoritical Society Meeting, 5308.
Pratesi, G., Bindi, L., Moggi-Cecchi, V. (2006): "Icosahedral coordination of phosphorus in the crystal structure of melliniite, a new phosphide mineral from the Northwest Africa (NWA) 1054 acapulcoite", American Mineralogist 91, 451-454.
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Internet Links for Melliniite |
| Search Engines: |
Look for Melliniite on Google
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| External Links: | Look for Melliniite on WebmineralLook for Melliniite on Athena MineralogyLook for Melliniite on WikipediaLook for Melliniite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Melliniite in the Natural History Museum (London) online catalogue |
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| Mineral Dealers: | Buy from David K Joyce mineralsBuy fine minerals and gemstones from Pala Internationalrare and unusual minerals mainly crystallizedRare and Unusual minerals at Mineralogical Research CompanyThe Arkenstone - Fine MineralsSearch for - Melliniite - on e-Rocks Mineral Sales & AuctionsWilensky Fine MineralsFabre Minerals - search for Melliniite specimensMineral Classics - Worldwide Collector Quality Minerals and GemsBuy RARE Minerals from Rocks of AfricaHigh-end worldwide specimens & outstanding customer serviceBuy Fine Minerals from mineralsweb.com |
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| Jobs: | Mining & Geology Jobs |
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Localities for Melliniite |