Lucchesiite, CaFe32 Al6(Si6O18)(BO3)(3)(OH)(3)O, a new mineral species of the tourmaline supergroup
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73583403" target="_blank" >RIV/61989592:15310/17:73583403 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/17:00094729
Result on the web
<a href="http://dx.doi.org/10.1180/minmag.2016.080.067" target="_blank" >http://dx.doi.org/10.1180/minmag.2016.080.067</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1180/minmag.2016.080.067" target="_blank" >10.1180/minmag.2016.080.067</a>
Alternative languages
Result language
angličtina
Original language name
Lucchesiite, CaFe32 Al6(Si6O18)(BO3)(3)(OH)(3)O, a new mineral species of the tourmaline supergroup
Original language description
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. Crystal-chemical analysis for the Sri Lanka (holotype) and Czech Republic (cotype) samples resulted in the empirical formulae, respectively: (X)(Ca0.69Na0.30K0.02)(Sigma 1.01)(Y)(Fe1.442+Mg0.72Al0.48Ti0.334+V0.023+Mn0.01Zn0.01)(Sigma 3.00)(Z)(Al4.74Mg1.01Fe0.253+)(Sigma 6.00) [(T)(Si5.85Al0.15)S6.00O18](BO3)(3)(V)(OH)(3)(W)[O0.69F0.24(OH)(0.07)](Sigma 1.00) and (X)(Ca0.49Na0.45.square K-0.05(0.01))(Sigma 1.00) (Y)(F-1.14(e2+) Fe-0.95(3+) Mg0.42Al0.37 Mn0.03Ti0.084+Zn0.01)(Sigma 3.00)(Z)(Al-5.11 Fe-0.38(3+) Mg-0.52)(Sigma 6.00) [(T)(Si5.88Al0.12)(Sigma 6.00)O-18] (BO3)(3) (V)[(OH)(2.66)O-0.34]Sigma(3.00) (W)(O0.94F0.06)(Sigma 1.00).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10504 - Mineralogy
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Mineralogical Magazine
ISSN
0026-461X
e-ISSN
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Volume of the periodical
81
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
15
Pages from-to
1-14
UT code for WoS article
000396518700001
EID of the result in the Scopus database
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