New data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)

<p>Gersdorffite, ideally NiAsS, and associated minerals from Contrada Zillì (Peloritani Mountains, Sicily, Italy) have been characterized through electron microprobe analysis and X-ray diffraction. Primary minerals, hosted in quartz veins, are represented by gersdorffite, tetrahedrite-(Fe), an...

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Autores principales:	D. Mauro, C. Biagioni, F. Zaccarini
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Mineralogy QE351-399.2
Acceso en línea:	https://doaj.org/article/bbf160a8702c4f1cb042afa5e8aef737
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spelling	oai:doaj.org-article:bbf160a8702c4f1cb042afa5e8aef7372021-11-19T05:45:11ZNew data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)10.5194/ejm-33-717-20210935-12211617-4011https://doaj.org/article/bbf160a8702c4f1cb042afa5e8aef7372021-11-01T00:00:00Zhttps://ejm.copernicus.org/articles/33/717/2021/ejm-33-717-2021.pdfhttps://doaj.org/toc/0935-1221https://doaj.org/toc/1617-4011<p>Gersdorffite, ideally NiAsS, and associated minerals from Contrada Zillì (Peloritani Mountains, Sicily, Italy) have been characterized through electron microprobe analysis and X-ray diffraction. Primary minerals, hosted in quartz veins, are represented by gersdorffite, tetrahedrite-(Fe), and chalcopyrite with minor pyrite and galena. Rare aikinite inclusions were observed in tetrahedrite-(Fe) and chalcopyrite. Gersdorffite occurs as euhedral to subhedral crystals, up to 1 mm in size, with (Sb,Bi)-enriched cores and (Fe,As)-enriched rims. Its chemical composition is (Ni<span class="inline-formula"><sub>0.79−0.95</sub></span>Fe<span class="inline-formula"><sub>0.18−0.04</sub></span>Co<span class="inline-formula"><sub>0.04−0.01</sub>)</span>(As<span class="inline-formula"><sub>0.90−1.03</sub></span>Sb<span class="inline-formula"><sub>0.10−0.00</sub></span>Bi<span class="inline-formula"><sub>0.02−0.00</sub>)</span>S<span class="inline-formula"><sub>0.98−0.92</sub></span>. It crystallizes in the space group <span class="inline-formula"><i>P</i></span>2<span class="inline-formula"><sub>1</sub></span>3, with unit-cell parameters <span class="inline-formula"><i>a</i>=5</span>.6968(7) Å, <span class="inline-formula"><i>V</i>=184</span>.88(7) Å<span class="inline-formula"><sup>3</sup></span>, and <span class="inline-formula"><i>Z</i>=4</span>, and its crystal structure was refined down to <span class="inline-formula"><i>R</i><sub>1</sub>=</span> 0.035. Associated tetrahedrite-(Fe) has chemical formula (Cu<span class="inline-formula"><sub>5.79</sub></span>Ag<span class="inline-formula"><sub>0.07</sub>)<sub>Σ5.86</sub></span>(Cu<span class="inline-formula"><sub>3.96</sub></span>Fe<span class="inline-formula"><sub>1.59</sub></span>Zn<span class="inline-formula"><sub>0.45</sub>)<sub>Σ6.00</sub></span>(Sb<span class="inline-formula"><sub>3.95</sub></span>As<span class="inline-formula"><sub>0.17</sub></span>Bi<span class="inline-formula"><sub>0.03</sub>)<sub>Σ4.15</sub></span>S<span class="inline-formula"><sub>13.06</sub></span>, with unit-cell parameters <span class="inline-formula"><i>a</i>=</span> 10.3815(10) Å, <span class="inline-formula"><i>V</i>=1118</span>.9(3) Å<span class="inline-formula"><sup>3</sup></span>, and space group <span class="inline-formula"><i>I</i></span>-43<span class="inline-formula"><i>m</i></span>. Its crystal structure was refined to <span class="inline-formula"><i>R</i><sub>1</sub>=0</span>.027. Textural and crystallographic data suggest a polyphasic crystallization of gersdorffite under low-temperature conditions.</p>D. MauroC. BiagioniF. ZaccariniCopernicus PublicationsarticleMineralogyQE351-399.2ENEuropean Journal of Mineralogy, Vol 33, Pp 717-726 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mineralogy QE351-399.2
spellingShingle	Mineralogy QE351-399.2 D. Mauro C. Biagioni F. Zaccarini New data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)
description	<p>Gersdorffite, ideally NiAsS, and associated minerals from Contrada Zillì (Peloritani Mountains, Sicily, Italy) have been characterized through electron microprobe analysis and X-ray diffraction. Primary minerals, hosted in quartz veins, are represented by gersdorffite, tetrahedrite-(Fe), and chalcopyrite with minor pyrite and galena. Rare aikinite inclusions were observed in tetrahedrite-(Fe) and chalcopyrite. Gersdorffite occurs as euhedral to subhedral crystals, up to 1 mm in size, with (Sb,Bi)-enriched cores and (Fe,As)-enriched rims. Its chemical composition is (Ni<span class="inline-formula"><sub>0.79−0.95</sub></span>Fe<span class="inline-formula"><sub>0.18−0.04</sub></span>Co<span class="inline-formula"><sub>0.04−0.01</sub>)</span>(As<span class="inline-formula"><sub>0.90−1.03</sub></span>Sb<span class="inline-formula"><sub>0.10−0.00</sub></span>Bi<span class="inline-formula"><sub>0.02−0.00</sub>)</span>S<span class="inline-formula"><sub>0.98−0.92</sub></span>. It crystallizes in the space group <span class="inline-formula"><i>P</i></span>2<span class="inline-formula"><sub>1</sub></span>3, with unit-cell parameters <span class="inline-formula"><i>a</i>=5</span>.6968(7) Å, <span class="inline-formula"><i>V</i>=184</span>.88(7) Å<span class="inline-formula"><sup>3</sup></span>, and <span class="inline-formula"><i>Z</i>=4</span>, and its crystal structure was refined down to <span class="inline-formula"><i>R</i><sub>1</sub>=</span> 0.035. Associated tetrahedrite-(Fe) has chemical formula (Cu<span class="inline-formula"><sub>5.79</sub></span>Ag<span class="inline-formula"><sub>0.07</sub>)<sub>Σ5.86</sub></span>(Cu<span class="inline-formula"><sub>3.96</sub></span>Fe<span class="inline-formula"><sub>1.59</sub></span>Zn<span class="inline-formula"><sub>0.45</sub>)<sub>Σ6.00</sub></span>(Sb<span class="inline-formula"><sub>3.95</sub></span>As<span class="inline-formula"><sub>0.17</sub></span>Bi<span class="inline-formula"><sub>0.03</sub>)<sub>Σ4.15</sub></span>S<span class="inline-formula"><sub>13.06</sub></span>, with unit-cell parameters <span class="inline-formula"><i>a</i>=</span> 10.3815(10) Å, <span class="inline-formula"><i>V</i>=1118</span>.9(3) Å<span class="inline-formula"><sup>3</sup></span>, and space group <span class="inline-formula"><i>I</i></span>-43<span class="inline-formula"><i>m</i></span>. Its crystal structure was refined to <span class="inline-formula"><i>R</i><sub>1</sub>=0</span>.027. Textural and crystallographic data suggest a polyphasic crystallization of gersdorffite under low-temperature conditions.</p>
format	article
author	D. Mauro C. Biagioni F. Zaccarini
author_facet	D. Mauro C. Biagioni F. Zaccarini
author_sort	D. Mauro
title	New data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)
title_short	New data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)
title_full	New data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)
title_fullStr	New data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)
title_full_unstemmed	New data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)
title_sort	new data on gersdorffite and associated minerals from the peloritani mountains (sicily, italy)
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/bbf160a8702c4f1cb042afa5e8aef737
work_keys_str_mv	AT dmauro newdataongersdorffiteandassociatedmineralsfromthepeloritanimountainssicilyitaly AT cbiagioni newdataongersdorffiteandassociatedmineralsfromthepeloritanimountainssicilyitaly AT fzaccarini newdataongersdorffiteandassociatedmineralsfromthepeloritanimountainssicilyitaly
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New data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)

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