| Reference Type | Journal (article/letter/editorial) |
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| Title | Deveroite-(Ce): a new REE-oxalate from Mount Cervandone, Devero Valley, Western-Central Alps, Italy |
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| Journal | Mineralogical Magazine |
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| Authors | Guastoni, A. | Author |
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| Nestola, F. | Author |
| Gentile, P. | Author |
| Zorzi, F. | Author |
| Alvaro, M. | Author |
| Lanza, A. | Author |
| Peruzzo, L. | Author |
| Schiazza, M. | Author |
| Casati, N. M. | Author |
| Year | 2013 (October) | Volume | 77 |
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| Issue | 7 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/rruff_1.0/uploads/MM77_3019.pdf+ |
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| DOI | doi:10.1180/minmag.2013.077.7.11Search in ResearchGate |
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| Generate Citation Formats |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 244458 | Long-form Identifier | mindat:1:5:244458:5 |
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| GUID | 0 |
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| Full Reference | Guastoni, A., Nestola, F., Gentile, P., Zorzi, F., Alvaro, M., Lanza, A., Peruzzo, L., Schiazza, M., Casati, N. M. (2013) Deveroite-(Ce): a new REE-oxalate from Mount Cervandone, Devero Valley, Western-Central Alps, Italy. Mineralogical Magazine, 77 (7) 3019-3026 doi:10.1180/minmag.2013.077.7.11 |
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| Plain Text | Guastoni, A., Nestola, F., Gentile, P., Zorzi, F., Alvaro, M., Lanza, A., Peruzzo, L., Schiazza, M., Casati, N. M. (2013) Deveroite-(Ce): a new REE-oxalate from Mount Cervandone, Devero Valley, Western-Central Alps, Italy. Mineralogical Magazine, 77 (7) 3019-3026 doi:10.1180/minmag.2013.077.7.11 |
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| Abstract/Notes | Deveroite-(Ce), ideally Ce2(C2O4)3·10H2O, is a new mineral (IMA 2013-003) found in the alpine fissures of Mount Cervandone, overlooking the Devero Valley, Piedmont, Italy. It occurs as sprays of colourless elongated tabular, acicular prisms only on cervandonite-(Ce). It has a white streak, a vitreous lustre, is not fluorescent and has a hardness of 2–2.5 (Mohs' scale). The tenacity is brittle and the crystals have a perfect cleavage along {010}. The calculated density is 2.352 g/cm3. Deveroite-(Ce) is biaxial (–) with 2V of ∼77°, is not pleochroic and the extinction angle (β ∧ c) is ∼27°. No twinning was observed. Electron microprobe analyses gave the following chemical formula: (Ce1.01Nd0.33La0.32Pr0.11Y0.11Sm0.01Pb0.04U0.03Th0.01Ca0.04)2.01(C2O4)2.99·9.99H2O. Although synchrotron radiation was not used to solve the structure of deveroite-(Ce) the extremely small size of the sample (13 μm × 3 μm × 1 μm) did not allow us to obtain reliable structural data. However, it was possible to determine the space group (monoclinic, P21/c) and the unit-cell parameters, which are: a = 11.240(8) Å, b = 9.635(11) Å, c = 10.339(12) Å, β = 114.41(10)°, V = 1019.6 Å3. The strongest lines in the powder diffraction pattern [d in Å (I)(hkl)] are: 10.266(100)(100); 4.816(35.26)(21); 3.415(27.83)(300); 5.125(24.70)(200); and 4.988(22.98)(111). Deveroite-(Ce) is named in recognition of Devero valley and Devero Natural Park. |
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