Classification of Rollandite |
| IMA status: | Approved 1998 |
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| Strunz 8th edition ID: | 7/C.0-37
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| Nickel-Strunz 10th (pending) edition ID: | 8.CD.30
8 : PHOSPHATES, ARSENATES, VANADATES C : Phosphates without additional anions, with H2O D : With only medium-sized cations, RO4:H2O = 1:2 |
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| mindat.org URL: | http://www.mindat.org/min-7037.html Please feel free to link to this page. |
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Type Occurrence of Rollandite |
| Type Locality: | Roua Mines (Clue de Roua), Daluis, Guillaumes, Alpes-Maritimes, Provence-Alpes-Côte d'Azur, France |
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Physical Properties of Rollandite |
| Lustre: | Vitreous |
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| Diaphaneity (Transparency): | Transparent |
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| Colour: | Glass-green |
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| Streak: | Very light green |
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| Hardness (Mohs): | 4 - 4½ |
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Crystallography of Rollandite |
| Crystal System: | Orthorhombic |
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Optical Data of Rollandite |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.745 nβ = 1.755 nγ = 1.760 |
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| 2V: | Measured: 71° , Calculated: 70° |
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| Maximum Birefringence: | δ = 0.015
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | High |
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| Dispersion: | strong |
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Chemical Properties of Rollandite |
| Formula: | |
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| Essential elements: | As, Cu, H, O |
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| All elements listed in formula: | As, Cu, H, O |
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Relationship of Rollandite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
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Other Names for Rollandite |
| Synonyms: | |
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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 Rollandite |
| Reference List: | Sarp, H. & Černý, R. (2000): Rollandite, Cu3(AsO4)2.4H2O, a new mineral: its description and crystal structure. European Journal of Mineralogy, 12, 1045-1050.
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Articles/Blogs about Rollandite |
Internet Links for Rollandite |
| Search Engines: |
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| External Links: | Look for Rollandite on WebmineralLook for Rollandite on Athena MineralogyLook for Rollandite on WikipediaLook for Rollandite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Rollandite in the Natural History Museum (London) online catalogueRollandite details from Handbook of Mineralogy (PDF) |
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Localities for Rollandite |