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Crystal structure of the OH-dominant gadolinite-(Y) analogue (Y,Ca)2 (Fe,□)Be 2 Si 2O 8 (OH,O)2 from Heftetjern pegmatite, Norway. / Chukanov, Nikita V.; Aksenov, Sergey M.; Rastsvetaeva, Ramiza K.; Kristiansen, Roy; Pekov, Igor V.; Belakovskiy, Dmitriy I.; Van, Konstantin V.; Bychkova, Yana V.; Britvin, Sergey N.

In: Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, Vol. 73, 2017, p. 899-906.

Research output: Contribution to journal › Article › peer-review

Harvard

Chukanov, NV, Aksenov, SM, Rastsvetaeva, RK, Kristiansen, R, Pekov, IV, Belakovskiy, DI, Van, KV, Bychkova, YV & Britvin, SN 2017, 'Crystal structure of the OH-dominant gadolinite-(Y) analogue (Y,Ca)2 (Fe,□)Be 2 Si 2O 8 (OH,O)2 from Heftetjern pegmatite, Norway', Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, vol. 73, pp. 899-906. https://doi.org/10.1107/S2052520617006588

APA

Chukanov, N. V., Aksenov, S. M., Rastsvetaeva, R. K., Kristiansen, R., Pekov, I. V., Belakovskiy, D. I., Van, K. V., Bychkova, Y. V., & Britvin, S. N. (2017). Crystal structure of the OH-dominant gadolinite-(Y) analogue (Y,Ca)2 (Fe,□)Be 2 Si 2O 8 (OH,O)2 from Heftetjern pegmatite, Norway. Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 73, 899-906. https://doi.org/10.1107/S2052520617006588

Vancouver

Chukanov NV, Aksenov SM, Rastsvetaeva RK, Kristiansen R, Pekov IV, Belakovskiy DI et al. Crystal structure of the OH-dominant gadolinite-(Y) analogue (Y,Ca)2 (Fe,□)Be 2 Si 2O 8 (OH,O)2 from Heftetjern pegmatite, Norway. Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials. 2017;73:899-906. https://doi.org/10.1107/S2052520617006588

Author

Chukanov, Nikita V. ; Aksenov, Sergey M. ; Rastsvetaeva, Ramiza K. ; Kristiansen, Roy ; Pekov, Igor V. ; Belakovskiy, Dmitriy I. ; Van, Konstantin V. ; Bychkova, Yana V. ; Britvin, Sergey N. / Crystal structure of the OH-dominant gadolinite-(Y) analogue (Y,Ca)2 (Fe,□)Be 2 Si 2O 8 (OH,O)2 from Heftetjern pegmatite, Norway. In: Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials. 2017 ; Vol. 73. pp. 899-906.

BibTeX

@article{9f0f6133e7fe432180d3c056463c6bc3,
title = "Crystal structure of the OH-dominant gadolinite-(Y) analogue (Y,Ca)2 (Fe,□)Be 2 Si 2O 8 (OH,O)2 from Heftetjern pegmatite, Norway",
abstract = "A hydroxyl-dominant analogue of gadolinite-(Y) (OH-Gad) has been discovered in the Heftetjern granitic pegmatite, southern Norway, in association with late-stage rare-earth-element containing minerals. The empirical formula, based on ten O atoms per formula unit, is (Y 1.285 Ca 0.55 Ce 0.07 La 0.04 Nd 0.01) Σ1.955 (Fe 2+ 0.57 □ 0.43)Be 2.02 Si 1.995 O 8.48 (OH) 1.52. The mineral is monoclinic, space group P2 1/c, a = 4.7514 (10), b = 7.5719 (16), c = 9.9414 (2) {\AA}, β = 90.015 (4)°, V = 357.663 (3) {\AA} 3 and Z = 2. The density calculated using the empirical formula is 3.903 g cm-3. The crystal structure was refined to R = 0.0217 for 776 reflections with I > 2σ(I). OH-Gad is isostructural with gadolinite-(Y) and it is characterized by the predominance of OH-over O 2-at the anionic {\O}-site. The refined crystal-chemical formula is: A (Y 1.25 Ca 0.55 Ce 0.2) X (Fe 2+ 0.57 □ 0.43) Z Be 2 T Si 2O 8 {\O} [(OH) 0.86 O 0.59 (OH)∗ 0.55] (Z = 2). The possible orientation and local environment of the hydroxyl group were suggested based on bond-valence sum calculations and geometrical analysis of the crystal structure. The infrared spectrum confirms disordering of H atoms. OH-Gad seems to be a potentially new mineral, the first simultaneously hydroxyl-and iron-dominant member of the gadolinite subgroup. It is an OH-analogue of gadolinite-(Y) and an Fe 2+-analogue of hingganite-(Y).",
keywords = "gadolinite-datolite group, Heftetjern, OH-dominant gadolinite-(Y)",
author = "Chukanov, {Nikita V.} and Aksenov, {Sergey M.} and Rastsvetaeva, {Ramiza K.} and Roy Kristiansen and Pekov, {Igor V.} and Belakovskiy, {Dmitriy I.} and Van, {Konstantin V.} and Bychkova, {Yana V.} and Britvin, {Sergey N.}",
year = "2017",
doi = "10.1107/S2052520617006588",
language = "English",
volume = "73",
pages = "899--906",
journal = "Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials",
issn = "2052-5192",
publisher = "International Union of Crystallography",

}

RIS

TY - JOUR

T1 - Crystal structure of the OH-dominant gadolinite-(Y) analogue (Y,Ca)2 (Fe,□)Be 2 Si 2O 8 (OH,O)2 from Heftetjern pegmatite, Norway

AU - Chukanov, Nikita V.

AU - Aksenov, Sergey M.

AU - Rastsvetaeva, Ramiza K.

AU - Kristiansen, Roy

AU - Pekov, Igor V.

AU - Belakovskiy, Dmitriy I.

AU - Van, Konstantin V.

AU - Bychkova, Yana V.

AU - Britvin, Sergey N.

PY - 2017

Y1 - 2017

N2 - A hydroxyl-dominant analogue of gadolinite-(Y) (OH-Gad) has been discovered in the Heftetjern granitic pegmatite, southern Norway, in association with late-stage rare-earth-element containing minerals. The empirical formula, based on ten O atoms per formula unit, is (Y 1.285 Ca 0.55 Ce 0.07 La 0.04 Nd 0.01) Σ1.955 (Fe 2+ 0.57 □ 0.43)Be 2.02 Si 1.995 O 8.48 (OH) 1.52. The mineral is monoclinic, space group P2 1/c, a = 4.7514 (10), b = 7.5719 (16), c = 9.9414 (2) Å, β = 90.015 (4)°, V = 357.663 (3) Å 3 and Z = 2. The density calculated using the empirical formula is 3.903 g cm-3. The crystal structure was refined to R = 0.0217 for 776 reflections with I > 2σ(I). OH-Gad is isostructural with gadolinite-(Y) and it is characterized by the predominance of OH-over O 2-at the anionic Ø-site. The refined crystal-chemical formula is: A (Y 1.25 Ca 0.55 Ce 0.2) X (Fe 2+ 0.57 □ 0.43) Z Be 2 T Si 2O 8 Ø [(OH) 0.86 O 0.59 (OH)∗ 0.55] (Z = 2). The possible orientation and local environment of the hydroxyl group were suggested based on bond-valence sum calculations and geometrical analysis of the crystal structure. The infrared spectrum confirms disordering of H atoms. OH-Gad seems to be a potentially new mineral, the first simultaneously hydroxyl-and iron-dominant member of the gadolinite subgroup. It is an OH-analogue of gadolinite-(Y) and an Fe 2+-analogue of hingganite-(Y).

AB - A hydroxyl-dominant analogue of gadolinite-(Y) (OH-Gad) has been discovered in the Heftetjern granitic pegmatite, southern Norway, in association with late-stage rare-earth-element containing minerals. The empirical formula, based on ten O atoms per formula unit, is (Y 1.285 Ca 0.55 Ce 0.07 La 0.04 Nd 0.01) Σ1.955 (Fe 2+ 0.57 □ 0.43)Be 2.02 Si 1.995 O 8.48 (OH) 1.52. The mineral is monoclinic, space group P2 1/c, a = 4.7514 (10), b = 7.5719 (16), c = 9.9414 (2) Å, β = 90.015 (4)°, V = 357.663 (3) Å 3 and Z = 2. The density calculated using the empirical formula is 3.903 g cm-3. The crystal structure was refined to R = 0.0217 for 776 reflections with I > 2σ(I). OH-Gad is isostructural with gadolinite-(Y) and it is characterized by the predominance of OH-over O 2-at the anionic Ø-site. The refined crystal-chemical formula is: A (Y 1.25 Ca 0.55 Ce 0.2) X (Fe 2+ 0.57 □ 0.43) Z Be 2 T Si 2O 8 Ø [(OH) 0.86 O 0.59 (OH)∗ 0.55] (Z = 2). The possible orientation and local environment of the hydroxyl group were suggested based on bond-valence sum calculations and geometrical analysis of the crystal structure. The infrared spectrum confirms disordering of H atoms. OH-Gad seems to be a potentially new mineral, the first simultaneously hydroxyl-and iron-dominant member of the gadolinite subgroup. It is an OH-analogue of gadolinite-(Y) and an Fe 2+-analogue of hingganite-(Y).

KW - gadolinite-datolite group

KW - Heftetjern

KW - OH-dominant gadolinite-(Y)

UR - http://www.scopus.com/inward/record.url?scp=85031287705&partnerID=8YFLogxK

U2 - 10.1107/S2052520617006588

DO - 10.1107/S2052520617006588

M3 - Article

AN - SCOPUS:85031287705

VL - 73

SP - 899

EP - 906

JO - Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials

JF - Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials

SN - 2052-5192

ER -

ID: 9291653