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@article{2240837,
author = {Bosi, Ferdinando and Biagioni, Cristian and Pezzotta, Federico and Skogby, Henrik and Halenius, Ulf and Cempírek, Jan and Hawthorne, Frank C. and Lussier, Aaron J. and Abdu, Yassir A. and Day, Maxwell C. and Fayek, Mostafa and Clark, Christine M. and Grice, Joel D. and Henry, Darrell J.},
article_location = {Middlesex},
article_number = {5},
doi = {http://dx.doi.org/10.1180/mgm.2022.54},
keywords = {uvite; new mineral species; tourmaline; crystal-structure refinement; electron microprobe; Mössbauer spectroscopy; infrared spectroscopy; optical absorption spectroscopy},
language = {eng},
issn = {0026-461X},
journal = {Mineralogical Magazine},
title = {Uvite, CaMg3(Al5Mg)(Si6O18)(BO3)(3)(OH)(3)(OH), a new, but long-anticipated mineral species of the tourmaline supergroup from San Piero in Campo, Elba Island, Italy},
url = {https://www.cambridge.org/core/journals/mineralogical-magazine/article/uvite-camg3al5mgsi6o18bo33oh3oh-a-new-but-longanticipated-mineral-species-of-the-tourmaline-supergroup-from-san-piero-in-campo-elba-island-italy/3593E74D15FB5628E60CA4F9CA9D5A63},
volume = {86},
year = {2022}
}
TY - JOUR
ID - 2240837
AU - Bosi, Ferdinando - Biagioni, Cristian - Pezzotta, Federico - Skogby, Henrik - Halenius, Ulf - Cempírek, Jan - Hawthorne, Frank C. - Lussier, Aaron J. - Abdu, Yassir A. - Day, Maxwell C. - Fayek, Mostafa - Clark, Christine M. - Grice, Joel D. - Henry, Darrell J.
PY - 2022
TI - Uvite, CaMg3(Al5Mg)(Si6O18)(BO3)(3)(OH)(3)(OH), a new, but long-anticipated mineral species of the tourmaline supergroup from San Piero in Campo, Elba Island, Italy
JF - Mineralogical Magazine
VL - 86
IS - 5
SP - 767-776
EP - 767-776
PB - Mineralogical Society
SN - 0026461X
KW - uvite
KW - new mineral species
KW - tourmaline
KW - crystal-structure refinement
KW - electron microprobe
KW - Mössbauer spectroscopy
KW - infrared spectroscopy
KW - optical absorption spectroscopy
UR - https://www.cambridge.org/core/journals/mineralogical-magazine/article/uvite-camg3al5mgsi6o18bo33oh3oh-a-new-but-longanticipated-mineral-species-of-the-tourmaline-supergroup-from-san-piero-in-campo-elba-island-italy/3593E74D15FB5628E60CA4F9CA9D5A63
N2 - Uvite, CaMg3(Al5Mg)(Si6O18)(BO3)(3)(OH)(3)(OH), is a new mineral of the tourmaline supergroup. It occurs in the Facciatoia quarry, San Piero in Campo, Elba Island, Italy (42 degrees 45' 04.55 '' N, 10 degrees 12'50.89 '' E) at the centre of a narrow (2-3 cm wide) vein composed of aggregates of dark brown to black tourmaline, penetrating (magnesite + dolomite)-rich hydrothermally altered metaserpentinite. Crystals are euhedral and up to 1 cm in size, brown with a vitreous lustre, conchoidal fracture and grey streak. Uvite has a Mohs hardness of similar to 7 1/2, a calculated density of 3.115 g/cm(3) and is uniaxial (-). Uvite has trigonal symmetry, space group R3m, a = 15.9519(10) angstrom, c = 7.2222(5) angstrom, V = 1597.3(1) angstrom 3 and Z = 3. The crystal structure was refined to R-1 = 1.77% using 1666 unique reflections collected with MoKa X-rays. Crystal-chemical analysis resulted in the empirical crystal-chemical formula (X)(Ca(0.61)Na(0.35)A(0.04)) S1.00Y Mg1.50Fe0.472+Al0.71Fe3+similar to 0.14Ti(0.1)8 similar to S3.00 Z Al4.54Fe0.183+V3+similar to 0.02 Mg-1.27) S-6.00 T Si5.90Al0.10()similar to S6.00O18 similar to BO3() 3O(3)(OH) 3O(1)[(OH)(0.55)F0.05O0.40] S1.00 which recast in its ordered form for classification purposes is: Uvite is a hydroxy-species belonging to the calcic-group of the tourmaline supergroup. The closest end-member compositions of valid tourmaline species are fluor-uvite and feruvite, to which uvite is related by the substitutions W(OH)-. WF- and YMg2+. YFe2+, respectively. The occurrence of a solid-solution between uvite and magnesio-lucchesiite, according to the substitution ZMg2+ + W(OH)-. ZAl(3+) + WO2-, is supported by experimental data. The new mineral was approved by the IMA-CNMNC (IMA 2019-113). Uvite from Facciatoia formed by the reaction between B-rich fluids, released during the crystallisation process of LCT pegmatites, and the surrounding metaserpentinites, altered by contact metamorphism in the aureole of the Miocene Mt. Capanne monzogranitic pluton.
ER -
BOSI, Ferdinando, Cristian BIAGIONI, Federico PEZZOTTA, Henrik SKOGBY, Ulf HALENIUS, Jan CEMPÍREK, Frank C. HAWTHORNE, Aaron J. LUSSIER, Yassir A. ABDU, Maxwell C. DAY, Mostafa FAYEK, Christine M. CLARK, Joel D. GRICE and Darrell J. HENRY. Uvite, CaMg3(Al5Mg)(Si6O18)(BO3)(3)(OH)(3)(OH), a new, but long-anticipated mineral species of the tourmaline supergroup from San Piero in Campo, Elba Island, Italy. \textit{Mineralogical Magazine}. Middlesex: Mineralogical Society, 2022, vol.~86, No~5, p.~767-776. ISSN~0026-461X. Available from: https://dx.doi.org/10.1180/mgm.2022.54.
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