Nannoniite, Al<sub>2</sub>(OH)<sub>5</sub>F, a new mineral from the Cetine di Cotorniano mine (Tuscany, Italy)
<p>The new mineral nannoniite, Al<span class="inline-formula"><sub>2</sub></span>(OH)<span class="inline-formula"><sub>5</sub></span>F (<span class="inline-formula"><i>Z</i>=4</span>), has bee...
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Copernicus Publications
2024-12-01
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| Series: | European Journal of Mineralogy |
| Online Access: | https://ejm.copernicus.org/articles/36/1011/2024/ejm-36-1011-2024.pdf |
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| author | C. Biagioni C. Biagioni E. Mugnaioli E. Mugnaioli S. Lorenzon D. Mauro D. Mauro S. Musetti J. Sejkora D. Belmonte N. Demitri Z. Dolníček |
| author_facet | C. Biagioni C. Biagioni E. Mugnaioli E. Mugnaioli S. Lorenzon D. Mauro D. Mauro S. Musetti J. Sejkora D. Belmonte N. Demitri Z. Dolníček |
| author_sort | C. Biagioni |
| collection | DOAJ |
| description | <p>The new mineral nannoniite, Al<span class="inline-formula"><sub>2</sub></span>(OH)<span class="inline-formula"><sub>5</sub></span>F (<span class="inline-formula"><i>Z</i>=4</span>), has been discovered in the Cetine di Cotorniano mine, Chiusdino, Siena, Tuscany, Italy. It occurs as spherical aggregates formed by micrometre-sized crystals, colourless to white in colour, with a white streak and a vitreous to earthy lustre. Fluorescence is bluish-yellow and yellowish-white under short- and longwave UV radiation, respectively. Electron microprobe analysis gave (in wt %) SO<span class="inline-formula"><sub>3</sub></span> 0.49, Al<span class="inline-formula"><sub>2</sub></span>O<span class="inline-formula"><sub>3</sub></span> 63.97, MgO 0.51, CaO 0.22, K<span class="inline-formula"><sub>2</sub></span>O 0.07, F 11.72, H<span class="inline-formula"><sub>2</sub></span>O<span class="inline-formula"><sub>(calc)</sub></span> 28.54, and <span class="inline-formula">−</span>O <span class="inline-formula">=</span> F <span class="inline-formula">−4.94</span>, with a total of 100.58. Nannoniite is monoclinic, with space group <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M15" display="inline" overflow="scroll" dspmath="mathml"><mrow><mi>P</mi><msub><mn mathvariant="normal">2</mn><mn mathvariant="normal">1</mn></msub><mo>/</mo><mi>n</mi></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="34pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="f46ec57be4c405f29b4061d652d98bf3"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-1011-2024-ie00001.svg" width="34pt" height="14pt" src="ejm-36-1011-2024-ie00001.png"/></svg:svg></span></span> and with <span class="inline-formula"><i>a</i>=8.68</span>8(3), <span class="inline-formula"><i>b</i>=5.024</span>(2), <span class="inline-formula"><i>c</i>=9.734</span>(4) Å, <span class="inline-formula"><i>β</i>=90.77</span>(2)°, and <span class="inline-formula"><i>V</i>=424.9</span>(3) Å<span class="inline-formula"><sup>3</sup></span>. The crystal structure was solved using three-dimensional electron diffraction and refined to <span class="inline-formula"><i>R</i><sub>(obs)</sub>=0.1524</span> for 2141 unique reflections with <span class="inline-formula"><i>I</i>>3<i>σ</i>(<i>I</i>)</span>. Nannoniite is homeotypic with gibbsite. In type material, nannoniite is associated with quartz, baryte, gypsum, and alunite in vugs of a silicified limestone. Its origin is probably related to the late-stage circulation of (Al,F)-rich fluids within the Sb ore deposit formerly exploited at the Cetine di Cotorniano mine.</p> |
| format | Article |
| id | doaj-art-cd6e5c7631234eafabac8cee9a8ade7e |
| institution | Kabale University |
| issn | 0935-1221 1617-4011 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | European Journal of Mineralogy |
| spelling | doaj-art-cd6e5c7631234eafabac8cee9a8ade7e2024-12-11T07:57:10ZengCopernicus PublicationsEuropean Journal of Mineralogy0935-12211617-40112024-12-01361011102210.5194/ejm-36-1011-2024Nannoniite, Al<sub>2</sub>(OH)<sub>5</sub>F, a new mineral from the Cetine di Cotorniano mine (Tuscany, Italy)C. Biagioni0C. Biagioni1E. Mugnaioli2E. Mugnaioli3S. Lorenzon4D. Mauro5D. Mauro6S. Musetti7J. Sejkora8D. Belmonte9N. Demitri10Z. Dolníček11Dipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria 53, 56126 Pisa, ItalyCentro per l'Integrazione della Strumentazione scientifica dell'Università di Pisa (CISUP), Università di Pisa, 56126 Pisa, ItalyDipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria 53, 56126 Pisa, ItalyCentro per l'Integrazione della Strumentazione scientifica dell'Università di Pisa (CISUP), Università di Pisa, 56126 Pisa, ItalyDipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria 53, 56126 Pisa, ItalyDipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria 53, 56126 Pisa, ItalyMuseo di Storia Naturale, Università di Pisa, Via Roma 79, 56011 Calci, ItalyDipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria 53, 56126 Pisa, ItalyDepartment of Mineralogy and Petrology, National Museum, Cirkusová 1740, 193 00 Prague 9, Czech RepublicDipartimento di Scienze della Terra, dell'Ambiente e della Vita (DISTAV), Università degli Studi di Genova, Corso Europa 26, 16132 Genoa, ItalyElettra Sincrotrone Trieste S.C.p.A., S.S. 14 km – 163.5 in Area Science Park, Basovizza, 34149 Trieste, ItalyDepartment of Mineralogy and Petrology, National Museum, Cirkusová 1740, 193 00 Prague 9, Czech Republic<p>The new mineral nannoniite, Al<span class="inline-formula"><sub>2</sub></span>(OH)<span class="inline-formula"><sub>5</sub></span>F (<span class="inline-formula"><i>Z</i>=4</span>), has been discovered in the Cetine di Cotorniano mine, Chiusdino, Siena, Tuscany, Italy. It occurs as spherical aggregates formed by micrometre-sized crystals, colourless to white in colour, with a white streak and a vitreous to earthy lustre. Fluorescence is bluish-yellow and yellowish-white under short- and longwave UV radiation, respectively. Electron microprobe analysis gave (in wt %) SO<span class="inline-formula"><sub>3</sub></span> 0.49, Al<span class="inline-formula"><sub>2</sub></span>O<span class="inline-formula"><sub>3</sub></span> 63.97, MgO 0.51, CaO 0.22, K<span class="inline-formula"><sub>2</sub></span>O 0.07, F 11.72, H<span class="inline-formula"><sub>2</sub></span>O<span class="inline-formula"><sub>(calc)</sub></span> 28.54, and <span class="inline-formula">−</span>O <span class="inline-formula">=</span> F <span class="inline-formula">−4.94</span>, with a total of 100.58. Nannoniite is monoclinic, with space group <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M15" display="inline" overflow="scroll" dspmath="mathml"><mrow><mi>P</mi><msub><mn mathvariant="normal">2</mn><mn mathvariant="normal">1</mn></msub><mo>/</mo><mi>n</mi></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="34pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="f46ec57be4c405f29b4061d652d98bf3"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-1011-2024-ie00001.svg" width="34pt" height="14pt" src="ejm-36-1011-2024-ie00001.png"/></svg:svg></span></span> and with <span class="inline-formula"><i>a</i>=8.68</span>8(3), <span class="inline-formula"><i>b</i>=5.024</span>(2), <span class="inline-formula"><i>c</i>=9.734</span>(4) Å, <span class="inline-formula"><i>β</i>=90.77</span>(2)°, and <span class="inline-formula"><i>V</i>=424.9</span>(3) Å<span class="inline-formula"><sup>3</sup></span>. The crystal structure was solved using three-dimensional electron diffraction and refined to <span class="inline-formula"><i>R</i><sub>(obs)</sub>=0.1524</span> for 2141 unique reflections with <span class="inline-formula"><i>I</i>>3<i>σ</i>(<i>I</i>)</span>. Nannoniite is homeotypic with gibbsite. In type material, nannoniite is associated with quartz, baryte, gypsum, and alunite in vugs of a silicified limestone. Its origin is probably related to the late-stage circulation of (Al,F)-rich fluids within the Sb ore deposit formerly exploited at the Cetine di Cotorniano mine.</p>https://ejm.copernicus.org/articles/36/1011/2024/ejm-36-1011-2024.pdf |
| spellingShingle | C. Biagioni C. Biagioni E. Mugnaioli E. Mugnaioli S. Lorenzon D. Mauro D. Mauro S. Musetti J. Sejkora D. Belmonte N. Demitri Z. Dolníček Nannoniite, Al<sub>2</sub>(OH)<sub>5</sub>F, a new mineral from the Cetine di Cotorniano mine (Tuscany, Italy) European Journal of Mineralogy |
| title | Nannoniite, Al<sub>2</sub>(OH)<sub>5</sub>F, a new mineral from the Cetine di Cotorniano mine (Tuscany, Italy) |
| title_full | Nannoniite, Al<sub>2</sub>(OH)<sub>5</sub>F, a new mineral from the Cetine di Cotorniano mine (Tuscany, Italy) |
| title_fullStr | Nannoniite, Al<sub>2</sub>(OH)<sub>5</sub>F, a new mineral from the Cetine di Cotorniano mine (Tuscany, Italy) |
| title_full_unstemmed | Nannoniite, Al<sub>2</sub>(OH)<sub>5</sub>F, a new mineral from the Cetine di Cotorniano mine (Tuscany, Italy) |
| title_short | Nannoniite, Al<sub>2</sub>(OH)<sub>5</sub>F, a new mineral from the Cetine di Cotorniano mine (Tuscany, Italy) |
| title_sort | nannoniite al sub 2 sub oh sub 5 sub f a new mineral from the cetine di cotorniano mine tuscany italy |
| url | https://ejm.copernicus.org/articles/36/1011/2024/ejm-36-1011-2024.pdf |
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