 | | Journal (article/letter/editorial) | | of Fe2+ over octahedrally coordinated sites of tourmaline Ferdinando Bosi1,2,* Department of Mineralogy...Museum of Natural History, Box 50007, 10405 Stockholm, Sweden Dipartimento di Scienze della Terra, Università...iron among octahedrally coordinated sites in tourmaline, and its stereochemical consequences, were investigated...investigated in a Fe-rich dravite in a skarn rock from Utö, Sweden. A multianalytical approach using structure refinement...established the chemical and structural nature of the tourmaline. A structural formula obtained by optimization |  | Novák, M., Ertl, A., Povondra, P., Galiová, M. V., Rossman, G. R., Pristacz, H., Prem, M., Giester, G., Gadas, P., Škoda, R. (2013) Darrellhenryite, Na(LiAl2)Al6(BO3)3Si6O18(OH)3O, a new mineral from the tourmaline supergroup. American Mineralogist, 98 (10) 1886-1892 doi:10.2138/am.2013.4416 | Journal (article/letter/editorial) | | Na(LiAl2)Al6(BO3)3Si6O18(OH)3O, a new mineral from the tourmaline supergroup Milan Novák1,*, Andreas Ertl2, Pavel...of the tourmaline supergroup (related to the alkali-subgroup 4), is a new Li-bearing tourmaline species...nomenclature of tourmaline-supergroup minerals. Keywords: Darrellhenryite, tourmaline group, chemical...London 2011). The current nomenclature of the tourmaline supergroup includes eight Li-bearing tourmalines...represents a new Li-bearing tourmaline species, which belongs to the oxy-tourmaline series as do povondraite |  | Lussier, Aaron, Ball, Neil A., Hawthorne, Frank C., Henry, Darrell J., Shimizu, Rentaro, Ogasawara, Yoshihide, Ota, Tsutomu (2016) Maruyamaite, K(MgAl2)(Al5Mg)Si6O18(BO3)3(OH)3O, a potassium-dominant tourmaline from the ultrahigh-pressure Kokchetav massif, northern Kazakhstan: Description and crystal structure. American Mineralogist, 101 (2) 355-361 doi:10.2138/am-2016-5359 | Journal (article/letter/editorial) | | K(MgAl2)(Al5Mg)Si6O18(BO3)3(OH)3O, a potassium-dominant tourmaline from the ultrahigh-pressure Kokchetav massif...as the first K-dominant mineral-species of the tourmaline supergroup. It occurs in ultrahigh-pressure quartzofeldspathic...substitution XK → XNa. Keywords: Maruyamaite, tourmaline, new mineral, electron-microprobe analysis, optical...Introduction The general formula of the minerals of the tourmaline supergroup can be written as X Y3 Z6 [T6O18]...Si, Al, B; B = B; V = OH, O; W = OH, F, O. The tourmaline * E-mail: frank_hawthorne@umanitoba.ca † Current |  | | Journal (article/letter/editorial) | | significant amounts of [4]B and [4]Al in an Al-rich tourmaline. The “oxy-rossmanite” from Eibenstein has the...hydroxyl groups are present in the Eibenstein tourmaline and that they are present at a lower concentration...is distinctly lower than for other Li-bearing tourmaline samples (970–1260 cm–2) with OH contents >3.0...irradiation of Mn2+. This is the first time a tourmaline is described that has a composition that falls...(Si6O18)(BO3)3(OH)4, is an alkali-deficient tourmaline described as a new tourmaline species from Rožná, western Moravia |  | Lussier, A. J., Aguiar, P. M., Michaelis, V. K., Kroeker, S., Hawthorne, F. C. (2009) The occurrence of tetrahedrally coordinated Al and B in tourmaline: An 11B and 27Al MAS NMR study. American Mineralogist, 94 (5) 785-792 doi:10.2138/am.2009.3000 | Journal (article/letter/editorial) | | occurrence of tetrahedrally coordinated Al and B in tourmaline: An 11B and 27Al MAS NMR study AAron J. Lussier...B at the T site in tourmaline. Although previously detected in several tourmaline specimens, the frequency...well as the extent to which they occur in the tourmaline structure, is not known. Using 11B and 27Al MAS...of B and Al at the T site in 50 inclusion-free tourmaline specimens of low transition-metal content and...that a [4]B content of 0.0–0.5 apfu is common in tourmaline containing low amounts of paramagnetic species |  | | Journal (article/letter/editorial) | | similar minerals or mineral groups, i.e., the tourmaline supergroup and axinite group, the beryl group...can induce the Jahn–Teller distortion, e.g., in tourmaline-, epidote-, and gadolinite-supergroup minerals...between Fe and (Al + Li) and between Fe and Mn in tourmaline is due to fractionation of the pegmatite melt...alkali-rich beryl from the Harding pegmatite, Taos County, New Mexico. Am. Miner. 1986, 71, 547–556. Hazen...chemical investigation of a zoned synthetic Cu-rich tourmaline. Can. Miner. 2015, 53, 209–220. [CrossRef] Bačík |  | Ertl, Andreas, Mali, Heinrich, Schuster, Ralf, Körner, Wilfried, Hughes, John M., Brandstätter, Franz, Tillmanns, Ekkehart (2010) Li-bearing, disordered Mg-rich tourmaline from a pegmatite-marble contact in the Austroalpine basement units (Styria, Austria) Mineralogy and Petrology, 99 (1) 89-104 doi:10.1007/s00710-009-0082-1 | Journal (article/letter/editorial) | | ORIGINAL PAPER Li-bearing, disordered Mg-rich tourmaline from a pegmatite-marble contact in the Austroalpine...tourmalines from highly-evolved pegmatites, the tourmaline samples from the border zone of the pegmatites...Introduction Geology Pale-blue to pale-green tourmaline occurs at several localities in the contact zone...colours are usually designated as elbaite (Li-tourmaline) but sometimes also found to be Mg-rich (Ertl...reported from only two localities worldwide, a tourmaline from Bližná, Czech Republic (Novák et al. 1999) |  | | Journal (article/letter/editorial) | | Canada ABSTRACT Liddicoatite, a rare species of tourmaline, has been found in the McCombe pegmatite, of...crystallization of columbite–tantalite, garnet and tourmaline species involved multiple episodes of growth...is apparently very rare in nature. Keywords: tourmaline, liddicoatite, elbaite, rare element, lithium...avons trouvé la liddicoatite, une espèce rare de tourmaline, dans la pegmatite granitique de McCombe, exemple...columbite–tantalite, du grenat et des espèces de tourmaline a impliqué de multiples épisodes de croissance |  | Novak, M., Skoda, R., Filip, J., Macek, I., Vaculovic, T. (2011) Compositional trends in tourmaline from intragranitic NYF pegmatites of the Trebic pluton, Czech Republic: an electron microprobe, Mossbauer and LA-ICP-MS study. The Canadian Mineralogist, 49 (1) 359-380 doi:10.3749/canmin.49.1.359 | Journal (article/letter/editorial) | | 3749/canmin.49.1.359 COMPOSITIONAL TRENDS IN TOURMALINE FROM INTRAGRANITIC NYF PEGMATITES OF THE TŘEBÍ...0.70) and accessory allanite-(Ce), ilmenite, tourmaline and titanite, were divided into three types generally...of quartz + feldspars and quartz + tourmaline). Black tourmaline occurs in several distinct morphological...in zoning; however, the morphological types of tourmaline do not differ chemically. They generally show...allanite-type, 17 to 26% for euxenite-type, and 22% for tourmaline from the pegmatite Klučov I, respectively, values |  | Lussier, A. J., Abdu, Y., Hawthorne, F. C., Michaelis, V. K., Aguiar, P. M., Kroeker, S. (2011) Oscillatory zoned liddicoatite from Anjanabonoina, central Madagascar. I. Crystal chemistry and structure by SREF and 11B and 27Al MAS NMR spectroscopy. The Canadian Mineralogist, 49 (1) 63-88 doi:10.3749/canmin.49.1.63 | Journal (article/letter/editorial) | | The limits of detection for 11B and 27Al in tourmaline by Magic-Angle-Spinning Nuclear Magnetic Resonance...= 6.00 apfu. Keywords: liddicoatite, elbaite, tourmaline, oscillatory zoning, crystal-structure refinement...limites de détection de 11B et 27Al dans une tourmaline par résonance magnétique nucléaire et spin à...Rédaction) Mots-clés: liddicoatite, elbaïte, tourmaline, zonation oscillatoire, affinement de la structure...(BO3)3(OH)3F (Hawthorne & Henry 1999), is a calcic tourmaline occurring in late-stage mineral assemblages of |
|
