Classification of Schreyerite |
| IMA status: | Approved 1976 |
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| Strunz 8th edition ID: | 4/C.26-20
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| Nickel-Strunz 10th (pending) edition ID: | 4.CB.35
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates) C : Metal: Oxygen = 2: 3,3: 5, and similar B : With medium-sized cations |
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| Dana 8th edition ID: | 8.4.1.1
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM 4 : A2B3O9 |
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| Hey's CIM Ref.: | 7.12.14
7 : Oxides and Hydroxides 12 : Oxides of V, Nb and Ta |
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| mindat.org URL: | http://www.mindat.org/min-3583.html Please feel free to link to this page. |
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Type Occurrence of Schreyerite |
| Type Locality: | Lasamba Hill, Kwale District, Coast Province, Kenya |
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| Year of Discovery: | 1976 |
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Physical Properties of Schreyerite |
| Lustre: | Metallic |
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| Colour: | Black |
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| Hardness (Mohs): | 7 |
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Crystallography of Schreyerite |
| Crystal System: | Monoclinic |
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| Cell Parameters: | a = 7.06Å, b = 5.01Å, c = 18.74Å β = 119.4° |
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| Ratio: | a:b:c = 1.409 : 1 : 3.741 |
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| Unit Cell Volume: | V 577.48 ų (Calculated from Unit Cell) |
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Optical Data of Schreyerite |
| Type: | Biaxial |
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| RI values: | nα = 2.700 |
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| Maximum Birefringence: | δ = 2.700
 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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| Dispersion: | relatively strong |
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Chemical Properties of Schreyerite |
| Formula: | |
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| Essential elements: | O, Ti, V |
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| All elements listed in formula: | O, Ti, V |
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Relationship of Schreyerite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
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| Related Minerals - Hey's Index Grouping: | |
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Other Names for Schreyerite |
| 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 Schreyerite |
| Reference List: | American Mineralogist (1978): 63: 1182-1186.
Neues Jahrbuch für Mineralogie, Monatshefte (1983): 110.
Dobelin, N., Reznitsky, L.Z., Sklyarov, E.V., Armbruster, Th., Medenbach, O. (2006): Schreyerite, V2Ti3O9: new occurrence and crystal structure. American Mineralogist, 91, 196-202.
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Internet Links for Schreyerite |
| Search Engines: |
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| External Links: | Look for Schreyerite on WebmineralLook for Schreyerite on Athena MineralogyLook for Schreyerite on WikipediaLook for Schreyerite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Schreyerite in the Natural History Museum (London) online catalogueSchreyerite details from Handbook of Mineralogy (PDF) |
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Localities for Schreyerite |