Classification of Lonsdaleite |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 1/B.02-50
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| Nickel-Strunz 10th (pending) edition ID: | 1.CB.10
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) C : Metalloids and Nonmetals B : Carbon-silicon family |
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| Dana 7th edition ID: | 1.3.5.3 |
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| Dana 8th edition ID: | 1.3.6.3
1 : NATIVE ELEMENTS AND ALLOYS 3 : Semi-metals and non-metals |
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| Hey's CIM Ref.: | 1.27
1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au) |
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| mindat.org URL: | http://www.mindat.org/min-2431.html Please feel free to link to this page. |
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Type Occurrence of Lonsdaleite |
| Type Locality: | Canyon Diablo meteorite, Meteor Crater and vicinity, Coconino Co., Arizona, USA |
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| Year of Discovery: | 1967 |
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Occurrences of Lonsdaleite |
| Geological Setting: | In meteorites and kimberlite. |
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Physical Properties of Lonsdaleite |
| Colour: | Transparent brownish-yellow |
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| Hardness (Mohs): | 7 - 8 |
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Crystallography of Lonsdaleite |
| Crystal System: | Hexagonal |
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| Cell Parameters: | a = 2.52Å, c = 4.12Å
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| Ratio: | a:c = 1 : 1.635 |
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| Unit Cell Volume: | V 22.66 ų (Calculated from Unit Cell) |
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Optical Data of Lonsdaleite |
| Type: | Uniaxial (+/-) |
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| RI values: | nα = 2.404 nβ = 2.404 |
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| Maximum Birefringence: | δ = 2.404
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Very High |
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Chemical Properties of Lonsdaleite |
| Formula: | |
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| Essential elements: | C |
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| All elements listed in formula: | C |
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Relationship of Lonsdaleite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
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| Related Minerals - Hey's Index Grouping: | |
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| Related Minerals - Dana Grouping): | |
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Other Names for Lonsdaleite |
| Synonyms: | |
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| German names: | |
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| Russian names: | |
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| Spanish names: | |
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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 Lonsdaleite |
| Reference List: | American Mineralogist (1967): 52: 1579.
Journal of Chemical Physics: 46: 3437-3446.
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Internet Links for Lonsdaleite |
| Search Engines: |
Look for Lonsdaleite on Google
Look for Lonsdaleite images on Google |
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| External Links: | Look for Lonsdaleite on WebmineralLook for Lonsdaleite on Athena MineralogyLook for Lonsdaleite on WikipediaLook for Lonsdaleite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Lonsdaleite in the Natural History Museum (London) online catalogueLonsdaleite details from Handbook of Mineralogy (PDF) |
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| Mineral Dealers: | e-Rocks - Mineral Auctions and SalesSearch for Lonsdaleite on minvision.comMineral Classics - Worldwide Collector Quality Minerals and GemsWright's Rock Shop - excellent mineral specimens since 1970Find Lonsdaleite on www.crystalclassics.co.ukHigh-end worldwide specimens & outstanding customer serviceWendel Minerals - Auktion & ShopWilensky Fine MineralsFine Minerals from Dan Weinrich MineralsLapis Mineral Magazinrare and unusual minerals mainly crystallizedSearch for Lonsdaleite at Thames Valley Minerals |
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Localities for Lonsdaleite |
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