BOSI, F., H. SKOGBY, M.E. CIRIOTTI, Petr GADAS, Milan NOVÁK, Jan CEMPÍREK, Dalibor VŠIANSKÝ and Jan FILIP. Lucchesiite, CaFe32+Al6(Si6O18)(BO3)(3)(OH)(3)O, a new mineral species of the tourmaline supergroup. Mineralogical Magazine. TWICKENHAM: Mineralogical Society, vol. 81, No 1, p. 1-14. ISSN 0026-461X. doi:10.1180/minmag.2016.080.067. 2017.
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Basic information
Original name Lucchesiite, CaFe32+Al6(Si6O18)(BO3)(3)(OH)(3)O, a new mineral species of the tourmaline supergroup
Authors BOSI, F. (380 Italy), H. SKOGBY (752 Sweden), M.E. CIRIOTTI (380 Italy), Petr GADAS (203 Czech Republic, guarantor, belonging to the institution), Milan NOVÁK (203 Czech Republic, belonging to the institution), Jan CEMPÍREK (203 Czech Republic, belonging to the institution), Dalibor VŠIANSKÝ (203 Czech Republic, belonging to the institution) and Jan FILIP (203 Czech Republic).
Edition Mineralogical Magazine, TWICKENHAM, Mineralogical Society, 2017, 0026-461X.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10500 1.5. Earth and related environmental sciences
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 1.744
RIV identification code RIV/00216224:14310/17:00094729
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1180/minmag.2016.080.067
UT WoS 000396518700001
Keywords (in Czech) lucchesiit; nový minerál; strukturní vypřesnění; elektronová mikrosonda; Mossbauerova spektroskopie; infračervená spektroskopie
Keywords in English lucchesiite; new mineral species; crystal-structure refinement; electron microprobe; Mossbauer spectroscopy; infrared spectroscopy
Tags NZ, rivok
Tags International impact, Reviewed
Changed by Changed by: Ing. Nicole Zrilić, učo 240776. Changed: 6/4/2018 14:14.
Abstract
Lucchesiite, CaFe32+Al6(Si6O18)(BO3)(3)(OH)(3)O, is a new mineral of the tourmaline supergroup. It occurs in the Ratnapura District, Sri Lanka (6 degrees 35'N, 80 degrees 35'E), most probably from pegmatites and in Mirosov near Strazek, western Moravia, Czech Republic, (49 degrees 27'49.38"N, 16 degrees 9'54.34"E) in anatectic pegmatite contaminated by host calc-silicate rock. Crystals are black with a vitreous lustre, conchoidal fracture and grey streak. Lucchesiite has a Mohs hardness of similar to 7 and a calculated density of 3.209 g/cm(3) (Sri Lanka) to 3.243 g/cm(3) (Czech Republic). In plane-polarized light, lucchesiite is pleochroic (O = very dark brown and E = light brown) and uniaxial (-). Lucchesiite is rhombohedral, space group R3m, a approximate to 16.00 angstrom, c approximate to 7.21 angstrom, V approximate to 1599.9 angstrom(3), Z = 3. The crystal structure of lucchesiite was refined to R1 approximate to 1.5% using similar to 2000 unique reflections collected with MoKa X-ray intensity data. Lucchesiite is an oxy-species belonging to the calcic group of the tourmaline supergroup. The closest end- member composition of a valid tourmaline species is that of feruvite, to which lucchesiite is ideally related by the heterovalent coupled substitution Al-Z(3+) + O-O1(2) <-> Mg-Z(2 +) + (O1)(OH)(1-). The new mineral was approved by the International Mineralogical Association Commission on New Minerals, Nomenclature and Classification (IMA 2015-043).
Links
GA14-13347S, research and development projectName: Variabilita lehkých prvků (Li, Be, B) ve vybraných horninotvorných a akcesorických minerálech z felsických magmatických a metamorfovaných hornin
Investor: Czech Science Foundation
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