| Reference Type | Journal (article/letter/editorial) |
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| Title | Zincalstibite-9R: the first nine-layer polytype with the layered double hydroxide structure-type |
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| Journal | Mineralogical Magazine |
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| Authors | Mills, S. J. | Author |
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| Christy, A. G. | Author |
| Kampf, A. R. | Author |
| Housley, R. M. | Author |
| Favreau, G. | Author |
| Boulliard, J.-C. | Author |
| Bourgoin, V. | Author |
| Year | 2012 (October) | Volume | 76 |
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| Page(s) | 1337-1345 | Issue | 5 |
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| Publisher | Mineralogical Society |
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| DOI | doi:10.1180/minmag.2012.076.5.01Search in ResearchGate |
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| Mindat Ref. ID | 244271 | Long-form Identifier | mindat:1:5:244271:0 |
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| GUID | 0166473f-e3e6-4646-84d2-d926ab3d22fb |
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| Full Reference | Mills, S. J., Christy, A. G., Kampf, A. R., Housley, R. M., Favreau, G., Boulliard, J.-C., Bourgoin, V. (2012) Zincalstibite-9R: the first nine-layer polytype with the layered double hydroxide structure-type. Mineralogical Magazine, 76 (5) 1337-1345 doi:10.1180/minmag.2012.076.5.01 |
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| Plain Text | Mills, S. J., Christy, A. G., Kampf, A. R., Housley, R. M., Favreau, G., Boulliard, J.-C., Bourgoin, V. (2012) Zincalstibite-9R: the first nine-layer polytype with the layered double hydroxide structure-type. Mineralogical Magazine, 76 (5) 1337-1345 doi:10.1180/minmag.2012.076.5.01 |
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| Abstract/Notes | AbstractZincalstibite-9R, a new polytype in the hydrotalcite supergroup is reported from the Monte Avanza mine, Italy. It occurs as pale blue curved disc-like tablets flattened on {001} intergrown to form rosettes typically less than 50 μm in diameter, with cyanophyllite and linarite in cavities in baryte. Zincalstibite-9R is uniaxial (–), with refractive indices ω = 1.647(2) and ε = 1.626(2) measured in white light. The empirical formula (based on 12 OH groups) is (Zn1.092+Cu0.872+Al0.04)Σ2.00Al1.01(Sb0.975+Si0.02)Σ0.99(OH)12, and the ideal formula is (Zn,Cu)2Al(OH)6[Sb(OH)6]. Zincalstibite-9R crystallizes in space group R, with a = 5.340(2), c = 88.01(2) Å, V = 2173.70(15) Å3 and Z = 9. The crystal structure was refined to R1 = 0.0931 for 370 unique reflections [Fo > 4σ(F)] and R1 = 0.0944 for all 381 unique reflections. It has the longest periodic layer stacking sequence for a layered double hydroxide compound reported to date. |
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