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fluor-schorl

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Journal Article
Published: 01 March 2016
European Journal of Mineralogy (2016) 28 (1): 163–177.
...Andreas Ertl; Uwe Kolitsch; M. Darby Dyar; Hans-Peter Meyer; George R. Rossman; Darrell J. Henry; Markus Prem; Thomas Ludwig; Lutz Nasdala; Christian L. Lengauer; Ekkehart Tillmanns; Gerhard Niedermayr Abstract Fluor-schorl, NaFe 2+ 3 Al 6 Si 6 O 18 (BO 3 ) 3 (OH) 3 F, is a new mineral species...
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Journal Article
Published: 01 July 2015
American Mineralogist (2015) 100 (7): 1434–1451.
...Renata Čopjaková; Radek Škoda; Michaela Vašinová Galiová; Milan Novák; Jan Cempírek Abstract Primary black thick-prismatic Al-rich schorl to rare fluor-schorl (TurP1), locally overgrown by brownish-green Li-rich fluor-schorl to fluor-elbaite (TurP2) from the Kracovice pegmatite (mixed NYF+LCT...
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Image
Raman spectra of <b>fluor</b>-<b>schorl</b> (solid line) and <b>schorl</b> (dotted line), both f...
Published: 01 March 2016
Fig. 2 Raman spectra of fluor-schorl (solid line) and schorl (dotted line), both from Zschorlau, Saxony, Germany.
Image
Optical absorption spectra of <b>fluor</b>-<b>schorl</b> from Grasstein, South Tyrol, Ita...
Published: 01 March 2016
Fig. 1 Optical absorption spectra of fluor-schorl from Grasstein, South Tyrol, Italy.
Image
Optical absorption spectra of a 45 μm thick crystal plate of <b>fluor</b>-<b>schorl</b> f...
Published: 01 August 2012
Figure 6 Optical absorption spectra of a 45 μm thick crystal plate of fluor-schorl from Grasstein, South Tyrol, Italy (sample GRAS1 from Ertl et al. 2006b ).
Journal Article
Published: 11 November 2019
Mineralogical Magazine (2020) 84 (2): 245–265.
... + Fe substitutions. The second, molybdenum-stage tourmaline, is schorl–dravite and fluor-schorlfluor-dravite enriched in Ca, and a few compositions belong to the calcic group. The predominant substitution is Ca + Mg ↔ Na + Al. The third, tin-stage tourmaline, is classified as schorl–dravite with some...
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Journal Article
Published: 01 August 2012
European Journal of Mineralogy (2012) 24 (4): 695–715.
... data (optical and Mössbauer spectroscopies) were used to characterize coloured (brown, pink, green) tourmalines from three granitic pegmatites from the Moldanubian nappes (Königsalm, Maigen and Blocherleitengraben; Lower Austria). The tourmalines can be classified as fluor-schorl, schorl, foitite...
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Journal Article
Published: 01 August 2000
The Canadian Mineralogist (2000) 38 (4): 877–891.
... and compositional zoning within individual tourmaline crystals, tourmaline at Tanco is characterized by the following sequence of crystallization: foitite – schorl → (± schorl – foitite) → Al-rich schorl (±Mg) → schorl (±Mg) → schorl – elbaite (±Mg) → “fluor-elbaite” – schorl (±Mg) → Fe-rich “fluor-elbaite” → Mn...
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Journal Article
Published: 01 April 2007
The Canadian Mineralogist (2007) 45 (2): 229–237.
... result in the misidentification of buergerite as “fluor-schorl”. Ultimately, as many data should be collected as possible, including information on the structure, Fe 3+ /Fe 2+ value, and Li and H contents. Abstract En général, les résultats d’analyses chimiques de minéraux du groupe de la tourmaline...
FIGURES
Journal Article
Published: 23 October 2018
The Canadian Mineralogist (2018) 56 (4): 425–449.
... cavities is dominantly schorl and fluor-schorl. The H 2 O content of schorl determined by LOI is very similar to H 2 O calculated by stoichiometry for the EMP analyses (3.23 av calc versus 3.35 av LOI), thus we infer that the oxygen content of the V-site in schorl is low. Prismatic schorl crystals from...
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Journal Article
Published: 28 February 2018
Mineralogical Magazine (2018) 82 (4): 913–928.
...Adam Pieczka; Andreas Ertl; Mateusz P. Sęk; Diana Twardak; Sylwia Zelek; Eligiusz Szełęg; Gerald Giester ABSTRACT Yellowish dravitic tourmaline (dominated by the oxy-dravite component) associated with secondary fluor-dravite/fluor-schorl and dravite/schorl tourmalines was found in a quartz vein...
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Journal Article
Published: 28 January 2021
The Canadian Mineralogist (2020) 58 (6): 717–732.
.... The pegmatite has a typical zonal internal structure with a volumetrically significant quartz core and pods of magmatic fluorite. Along with biotite, mostly in the outer units, tourmaline (schorl, fluor-schorl) is common to abundant in most pegmatite units. Accessory minerals include common strongly hematitized...
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Journal Article
Published: 01 February 2015
Mineralogical Magazine (2015) 79 (1): 89–101.
... Island, Italy, in association with quartz, K-feldspar, plagioclase, elbaite, schorl, fluor-elbaite and tsilaisite. Crystals are greenish yellow with a vitreous lustre, sub-conchoidal fracture and white streak. Fluor-tsilaisite has a Mohs hardness of ~7 and a calculated density of 3.134 g/cm 3 . In plane...
FIGURES
Journal Article
Published: 01 February 2000
The Canadian Mineralogist (2000) 38 (1): 131–143.
... generation, preserved in the fiber interior, is a dark blue foitite; the blue-gray second generation varies from Fe-rich elbaite to Li-rich schorl, and the third generation is a yellowish-green “fluor-elbaite”. Volumetrically the most abundant, generation-three fibers poikiloblastically replace the earlier...
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Image
Covariation in tourmaline of the foitite–<b>schorl</b>–elbaite–”<b>fluor</b>-elbaite” ser...
Published: 01 April 2005
F ig . 7. Covariation in tourmaline of the foitite–schorl–elbaite–”fluor-elbaite” series from the spodumene zone and aplite unit of the McCombe pegmatite. Data on elbaite–”fluor-elbaite”–liddicoatite from the lepidolite unit also are plotted and compared with selected data on liddicoatite from
Journal Article
Published: 01 January 2010
American Mineralogist (2010) 95 (1): 24–40.
... is a Mn-bearing “oxy-schorl.” The grayish-yellow, intermediate zone is Mn-rich “fluor-elbaite” that contains a relatively high Mn content with ~6 wt% MnO. The nearly colorless “fluor-elbaite” rim has the highest Li content of all zones. There is an inverse correlation between the lattice parameter...
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Journal Article
Published: 01 May 2012
American Mineralogist (2012) 97 (5-6): 989–994.
... of Elba, Italy, in association with quartz, K-feldspar, plagioclase, elbaite, and schorl. Crystals are greenish yellow with a vitreous luster, a white streak, and show no fluorescence. Tsilaisite has a Mohs hardness of approximately 7; it is brittle with a sub-conchoidal fracture, and has a calculated...
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Journal Article
Published: 01 June 2001
The Canadian Mineralogist (2001) 39 (3): 747–755.
... associés microcline, quartz, albite, tourmaline (série elbaïte – liddicoatite – schorl), béryl césique, spodumène, danburite, fluor-apatite manganifère, hambergite, microlite, manganocolumbite, manganotantalite, béhierite, et zircon hafnifère, entre autres. Les cristaux sont équidimensionnels...
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Journal Article
Published: 01 December 2000
The Canadian Mineralogist (2000) 38 (6): 1399–1408.
... complexly zoned fibrous tourmaline (foitite – Fe-rich elbaite – Li-rich schorl – “fluor-elbaite”) hosted by elbaite from the Cruzeiro mine, Minas Gerais, Brazil. Black tourmaline from less fractionated, outer units of lepidolite- and petalite-subtype pegmatites also locally exhibit a slight predominance...
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Journal Article
Published: 01 April 2014
The Canadian Mineralogist (2014) 52 (2): 129–164.
... as the only accessory minerals, but 12 dikes are more fractionated and correspond to beryl-columbite, beryl-columbite-phosphate, and lepidolite subtypes. Detailed study of tourmaline (dravite, schorl, fluor-elbaite, Mn-rich elbaite), cordierite-sekaninaite, garnet, rare element-bearing silicate minerals...
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