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rossmanite

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Journal Article
Published: 01 December 2024
Mineralogical Magazine (2024) 88 (6): 668–676.
...Anatoly V. Kasatkin; Fabrizio Nestola; Maxwell C. Day; Liudmila A. Gorelova; Radek Škoda; Oleg S. Vereshchagin; Atali A. Agakhanov; Dmitriy I. Belakovskiy; Martha G. Pamato; Jan Cempírek; Mikhail Yu. Anosov Abstract Fluor-rossmanite, ideally □(Al 2 Li)Al 6 (Si 6 O 18 )(BO 3 ) 3 (OH) 3 F, is a new...
FIGURES | View All (4)
Journal Article
Published: 01 February 2022
American Mineralogist (2022) 107 (2): 157–166.
...Andreas Ertl; John M. Hughes; Stefan Prowatke; Thomas Ludwig; Christian L. Lengauer; Hans-Peter Meyer; Gerald Giester; Uwe Kolitsch; Albert Prayer Abstract Alumino-oxy-rossmanite, ideally ☐Al 3 Al 6 (Si 5 AlO 18 )(BO 3 ) 3 (OH) 3 O, is here described as a new member of the tourmaline supergroup...
FIGURES | View All (7)
Journal Article
Published: 01 February 2005
American Mineralogist (2005) 90 (2-3): 481–487.
...Andreas Ertl; George R. Rossman; John M. Hughes; Stefan Prowatke; Thomas Ludwig Abstract Pink, Mn-bearing “oxy-rossmanite” from a pegmatite in a quarry near Eibenstein an der Thaya, Lower Austria, has been characterized by crystal structure determination, chemical analyses (EMPA, SIMS), and optical...
FIGURES | View All (9)
Journal Article
Published: 01 June 2004
The Canadian Mineralogist (2004) 42 (3): 873–882.
...Ai Cheng Zhang; Ru Cheng Wang; Huan Hu; Xiao Ming Chen; Hui Zhang Abstract Two species of X -site-vacant tourmalines, foitite and rossmanite, occur in the Koktokay No. 3 granitic pegmatite dyke, Altai, northwestern China, a spodumene-subtype pegmatite. Foitite–schorl crystals develop as fillings...
FIGURES | View All (8)
Journal Article
Published: 01 August 1998
American Mineralogist (1998) 83 (7-8): 896–900.
...Julie B. Selway; Milan Novak; Frank C. Hawthorne; Petr Cerny; Luisa Ottolini; T. Kurtis Kyser Abstract Rossmanite is a new tourmaline species from near Rozna, western Moravia, Czech Republic. It forms pale pink columnar crystals about 25 mm long and 5 mm thick, elongated along c with striations...
Journal Article
Published: 01 August 2000
The Canadian Mineralogist (2000) 38 (4): 877–891.
...-bearing “fluor-elbaite” → rossmanite – elbaite → elbaite –rossmanite → (± Ca-bearing “fluor-elbaite”, Ca-bearing “fluor-elbaite” – rossmanite). The dominant substitution at the X site is Na ⇌ □, and there is a positive correlation between proportions of Na and F. The dominant substitution at the Y site...
FIGURES | View All (8)
Image
Total Al vs. Si in different Al-rich tourmaline end-members. Note: a = Olenite; b = Darrellhenryite; c = Elbaite, fluorelbaite; d = Fluor-liddicoatite. Measured samples: PINK1 = Aluminooxy-rossmanite (type material); PINK2 = Pink tourmaline with a major alumino-oxy-rossmanite component.
Published: 01 February 2022
Figure 6. Total Al vs. Si in different Al-rich tourmaline end-members. Note: a = Olenite; b = Darrellhenryite; c = Elbaite, fluorelbaite; d = Fluor-liddicoatite. Measured samples: PINK1 = Aluminooxy-rossmanite (type material); PINK2 = Pink tourmaline with a major alumino-oxy-rossmanite component.
Journal Article
Published: 01 February 2011
The Canadian Mineralogist (2011) 49 (1): 301–319.
... (> 3 wt.% MnO) elbaite and “fluor-elbaite”. Though rare, yellow rossmanite and “fluor-rossmanite” from Mozambique also occur. Overall, the MnO content ranges from 3.09 to 8.90 wt.%. The FeO contents are less than 1 wt.%, and most are very low (< 0.09 wt.% FeO). Relative to typical pale-colored...
FIGURES | View All (10)
Image
Pink core of alumino-oxy-rossmanite (type material, PINK1) with a dark green rim of Fe-bearing alumino-oxy-rossmanite in quartz. Found in 1994 in the Hengl quarry, near the village Eibenstein an der Thaya, Lower Austria (photo detail ~7 × 13 mm2). Collection A.P.
Published: 01 February 2022
Figure 1. Pink core of alumino-oxy-rossmanite (type material, PINK1) with a dark green rim of Fe-bearing alumino-oxy-rossmanite in quartz. Found in 1994 in the Hengl quarry, near the village Eibenstein an der Thaya, Lower Austria (photo detail ~7 × 13 mm 2 ). Collection A.P.
Image
Color-zoned tourmaline crystal from a miarolitic cavity in HG (3 mm) and backscattered electron image showing three possible species: schorl, foitite, and possibly rossmanite (darkest bands); further work is needed to confirm if these areas contain sufficient Li to be rossmanite.
Published: 23 October 2018
Fig. 8. Color-zoned tourmaline crystal from a miarolitic cavity in HG (3 mm) and backscattered electron image showing three possible species: schorl, foitite, and possibly rossmanite (darkest bands); further work is needed to confirm if these areas contain sufficient Li to be rossmanite.
Image
Published: 01 December 2024
Table 5. Selected interatomic distances (Å) for fluor-rossmanite.
Image
Plot of Na/(Na + Vac) versus Al/(Al + Fe) composition of Erongo tourmaline showing the fields for schorl, foitite, elbaite, and rossmanite. Compositions range from Fe-rich schorl to low-Fe schorl and to foitite. The Li content of Erongo tourmaline is too low for elbaite or rossmanite.
Published: 23 October 2018
Fig. 11. Plot of Na/(Na + Vac) versus Al/(Al + Fe) composition of Erongo tourmaline showing the fields for schorl, foitite, elbaite, and rossmanite. Compositions range from Fe-rich schorl to low-Fe schorl and to foitite. The Li content of Erongo tourmaline is too low for elbaite or rossmanite.
Image
Relationship between bond-angle distortion σoct2 of the ZO6 octahedron and the average Y-O distance. Modified from Figure 3 from Ertl et al. (2002), including the structural data from Hughes et al. (2004). Alumino-oxy-rossmanite (type material, PINK1), Al-rich oxytourmaline (with a major alumino-oxy-rossmanite component, PINK2).
Published: 01 February 2022
Figure 5. Relationship between bond-angle distortion σ o c t 2 of the ZO 6 octahedron and the average Y-O distance. Modified from Figure 3 from Ertl et al. (2002) , including the structural data from Hughes et al. (2004) . Alumino-oxy-rossmanite (type material, PINK1), Al
Image
Cross section of polychrome tourmaline crystal with fluor-rossmanite zone. Photo by Maria D. Milshina. Specimen no. 6049/1.
Published: 01 December 2024
Figure 2. Cross section of polychrome tourmaline crystal with fluor-rossmanite zone. Photo by Maria D. Milshina. Specimen no. 6049/1.
Image
Published: 01 December 2024
Table 2. Powder X-ray diffraction data ( d in Å) for fluor-rossmanite. Note: The eight strongest reflections are shown in bold. Only reflections with a relative intensity ≥ 5 are reported.
Journal Article
Published: 01 February 2008
The Canadian Mineralogist (2008) 46 (1): 41–58.
... in the outer zones (zones I to IV) of the pegmatite is elbaite–schorl solid solution with an intermediate composition between the end members; it is generally homogeneous within individual grains. In the inner zones (zones V, VI, and VIII), the tourmaline is dominantly elbaite with rare rossmanite in zone V...
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Image
Back-scattered electron (BSE) and plane-polarized light images of tourmalines from the Koktokay No. 3 pegmatite. a, dravite (G1) in association with garnet and quartz from the border zone; b, sieve-like texture composed of tourmaline and quartz from zone II; c, complex oscillatory growth of tourmalines from zone IV; d, rossmanite veinlets in elbaite crystals from zone VIII. Ab, albite; Qz, quartz; Grt, garnet; Drv, dravite; Srl, schorl; Elb, elbaite; Rsm, rossmanite. (online version in colour)
Published: 01 June 2015
of tourmalines from zone IV; d, rossmanite veinlets in elbaite crystals from zone VIII. Ab, albite; Qz, quartz; Grt, garnet; Drv, dravite; Srl, schorl; Elb, elbaite; Rsm, rossmanite. (online version in colour)
Image
The FTIR spectrum of fluor-rossmanite in the range 4000–700 cm–1. Bands are observed that are associated with O(1)/O(3)[OH]-stretching modes, [BO3]3– and [SiO4]4– stretching and bending modes.
Published: 01 December 2024
Figure 3. The FTIR spectrum of fluor-rossmanite in the range 4000–700 cm –1 . Bands are observed that are associated with O(1)/O(3) [OH]-stretching modes, [BO 3 ] 3– and [SiO 4 ] 4– stretching and bending modes.
Image
Optical absorption spectrum of a 0.0928 mm thick crystal of alumino-oxy-rossmanite (sample PINK1).
Published: 01 February 2022
Figure 3. Optical absorption spectrum of a 0.0928 mm thick crystal of alumino-oxy-rossmanite (sample PINK1).
Image
Thermal expansion coefficient vs. temperature in Na-rich rossmanite and schorl. The coefficient was calculated from the fit reported in Table 3.
Published: 01 June 2023
Figure 3. Thermal expansion coefficient vs. temperature in Na-rich rossmanite and schorl. The coefficient was calculated from the fit reported in Table 3 .