Synthesis and crystal structure of Pb-dominant tourmaline

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Synthesis and crystal structure of Pb-dominant tourmaline. / Vereshchagin, Oleg S.; Wunder, Bernd; Britvin, Sergey N.; Frank-Kamenetskaya, Olga V.; Wilke, Franziska D.H.; Vlasenko, Natalia S.; Shilovskikh, Vladimir V.

In: American Mineralogist, Vol. 105, No. 10, 27.10.2020, p. 1589-1592.

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

Author

Vereshchagin, Oleg S. ; Wunder, Bernd ; Britvin, Sergey N. ; Frank-Kamenetskaya, Olga V. ; Wilke, Franziska D.H. ; Vlasenko, Natalia S. ; Shilovskikh, Vladimir V. / Synthesis and crystal structure of Pb-dominant tourmaline. In: American Mineralogist. 2020 ; Vol. 105, No. 10. pp. 1589-1592.

BibTeX

@article{04e63436abc142798875d04f18b55fd8,

title = "Synthesis and crystal structure of Pb-dominant tourmaline",

abstract = "Pb-dominant tourmaline was synthesized at 700 °C and 200 MPa in two hydrothermal experiments in the system MgO-Al2O3-B2O3-SiO2-PbO-H2O (run OV-4-2) and MgO-Al2O3-B2O3-SiO2-PbO-CaO-Na2O-H2O (run OV-5-3), respectively. Run OV-4-2 forms needle-like (lengths up to 7 μm), lead-rich (up to 13.3 wt% PbO) crystals that are chemically homogeneous. Run OV-5-3 forms columnar (lengths up to 400 μm) crystals that are chemically zoned (Pb-rich cores, up to 14.7 wt% PbO, and Pb-poor rims, ~2 wt% PbO). Additional phases that form in trace amounts are Pb-feldspar, quartz, diaspore (in OV-4-2) and talc, mullite, spinel, quartz (in OV-5-3). Single-crystal structure refinement (SREF) of the central zone of Pb-rich tourmaline from the run OV-5-3 proves that Pb2+ cations occupy the X-site in the tourmaline structure. The unit-cell parameters of the studied tourmaline are: a = 15.9508(10) {\AA}, c = 7.2024(6) {\AA}. The formula derived from SREF results of this Pb-rich tourmaline is X(Pb0.63 - 0.37) Y(Al1.71Mg1.29) Z(Al5.04Mg0.96) T(Si6.00O18) (BO3)3 V(OH)3.00 W(O1.00). Accordingly, the studied crystal is a Pb-analog of hypothetical {"}oxy-uvite,{"}and thus referred to here as {"}Pb-oxy-uvite.{"}Similarities between (1) the paragenesis of Minh Tien tourmaline, and (2) the final experimental phase assemblages observed here, indicate comparable P-T conditions of formation. ",

keywords = "tourmaline, Pb, synthesis, lead end-member, crystal chemistry, tourmaline, Pb, crystal chemistry, lead end-member, synthesis, Tourmaline, HIGH-PRESSURE, BORON, DRAVITE, SREF, STABILITY, COMPRESSIBILITY, BOND-VALENCE PARAMETERS, KOKCHETAV MASSIF, MARUYAMAITE, CHEMISTRY",

author = "Vereshchagin, {Oleg S.} and Bernd Wunder and Britvin, {Sergey N.} and Frank-Kamenetskaya, {Olga V.} and Wilke, {Franziska D.H.} and Vlasenko, {Natalia S.} and Shilovskikh, {Vladimir V.}",

note = "Funding Information: The authors thank U. Dittmann for sample preparation, H.-P. Nabein for help with the PXRD analysis and Resource centers of SPbSU (X-ray Diffraction Centre, Geomodel) for providing instrumental and computational resources. Authors thanks to B. Trumbull for proof reading. We are thankful to the Associate Editor, Aaron Lussier, two reviewers, Jan Cemp{\'i}rek and Andreas Ertl, and the Technical Editor who contributed significantly to improving the quality of the manuscript. O.S.V. thanks The German Academic Exchange Service (DAAD) and Saint Petersburg State University for scholarship “Dmitrij Mendeleev”. This work was supported by grant of the President of the Russian Federation No NSh-2526.2020.5. Publisher Copyright: {\textcopyright} 2020 Walter de Gruyter GmbH, Berlin/Boston 2020. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = oct,

day = "27",

doi = "10.2138/am-2020-7457",

language = "English",

volume = "105",

pages = "1589--1592",

journal = "American Mineralogist",

issn = "0003-004X",

publisher = "Mineralogical Society of America",

number = "10",

}

RIS

TY - JOUR

T1 - Synthesis and crystal structure of Pb-dominant tourmaline

AU - Vereshchagin, Oleg S.

AU - Wunder, Bernd

AU - Britvin, Sergey N.

AU - Frank-Kamenetskaya, Olga V.

AU - Wilke, Franziska D.H.

AU - Vlasenko, Natalia S.

AU - Shilovskikh, Vladimir V.

N1 - Funding Information: The authors thank U. Dittmann for sample preparation, H.-P. Nabein for help with the PXRD analysis and Resource centers of SPbSU (X-ray Diffraction Centre, Geomodel) for providing instrumental and computational resources. Authors thanks to B. Trumbull for proof reading. We are thankful to the Associate Editor, Aaron Lussier, two reviewers, Jan Cempírek and Andreas Ertl, and the Technical Editor who contributed significantly to improving the quality of the manuscript. O.S.V. thanks The German Academic Exchange Service (DAAD) and Saint Petersburg State University for scholarship “Dmitrij Mendeleev”. This work was supported by grant of the President of the Russian Federation No NSh-2526.2020.5. Publisher Copyright: © 2020 Walter de Gruyter GmbH, Berlin/Boston 2020. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/10/27

Y1 - 2020/10/27

N2 - Pb-dominant tourmaline was synthesized at 700 °C and 200 MPa in two hydrothermal experiments in the system MgO-Al2O3-B2O3-SiO2-PbO-H2O (run OV-4-2) and MgO-Al2O3-B2O3-SiO2-PbO-CaO-Na2O-H2O (run OV-5-3), respectively. Run OV-4-2 forms needle-like (lengths up to 7 μm), lead-rich (up to 13.3 wt% PbO) crystals that are chemically homogeneous. Run OV-5-3 forms columnar (lengths up to 400 μm) crystals that are chemically zoned (Pb-rich cores, up to 14.7 wt% PbO, and Pb-poor rims, ~2 wt% PbO). Additional phases that form in trace amounts are Pb-feldspar, quartz, diaspore (in OV-4-2) and talc, mullite, spinel, quartz (in OV-5-3). Single-crystal structure refinement (SREF) of the central zone of Pb-rich tourmaline from the run OV-5-3 proves that Pb2+ cations occupy the X-site in the tourmaline structure. The unit-cell parameters of the studied tourmaline are: a = 15.9508(10) Å, c = 7.2024(6) Å. The formula derived from SREF results of this Pb-rich tourmaline is X(Pb0.63 - 0.37) Y(Al1.71Mg1.29) Z(Al5.04Mg0.96) T(Si6.00O18) (BO3)3 V(OH)3.00 W(O1.00). Accordingly, the studied crystal is a Pb-analog of hypothetical "oxy-uvite,"and thus referred to here as "Pb-oxy-uvite."Similarities between (1) the paragenesis of Minh Tien tourmaline, and (2) the final experimental phase assemblages observed here, indicate comparable P-T conditions of formation.

AB - Pb-dominant tourmaline was synthesized at 700 °C and 200 MPa in two hydrothermal experiments in the system MgO-Al2O3-B2O3-SiO2-PbO-H2O (run OV-4-2) and MgO-Al2O3-B2O3-SiO2-PbO-CaO-Na2O-H2O (run OV-5-3), respectively. Run OV-4-2 forms needle-like (lengths up to 7 μm), lead-rich (up to 13.3 wt% PbO) crystals that are chemically homogeneous. Run OV-5-3 forms columnar (lengths up to 400 μm) crystals that are chemically zoned (Pb-rich cores, up to 14.7 wt% PbO, and Pb-poor rims, ~2 wt% PbO). Additional phases that form in trace amounts are Pb-feldspar, quartz, diaspore (in OV-4-2) and talc, mullite, spinel, quartz (in OV-5-3). Single-crystal structure refinement (SREF) of the central zone of Pb-rich tourmaline from the run OV-5-3 proves that Pb2+ cations occupy the X-site in the tourmaline structure. The unit-cell parameters of the studied tourmaline are: a = 15.9508(10) Å, c = 7.2024(6) Å. The formula derived from SREF results of this Pb-rich tourmaline is X(Pb0.63 - 0.37) Y(Al1.71Mg1.29) Z(Al5.04Mg0.96) T(Si6.00O18) (BO3)3 V(OH)3.00 W(O1.00). Accordingly, the studied crystal is a Pb-analog of hypothetical "oxy-uvite,"and thus referred to here as "Pb-oxy-uvite."Similarities between (1) the paragenesis of Minh Tien tourmaline, and (2) the final experimental phase assemblages observed here, indicate comparable P-T conditions of formation.

KW - tourmaline

KW - Pb

KW - synthesis

KW - lead end-member

KW - crystal chemistry

KW - tourmaline

KW - Pb

KW - crystal chemistry

KW - lead end-member

KW - synthesis

KW - Tourmaline

KW - HIGH-PRESSURE

KW - BORON

KW - DRAVITE

KW - SREF

KW - STABILITY

KW - COMPRESSIBILITY

KW - BOND-VALENCE PARAMETERS

KW - KOKCHETAV MASSIF

KW - MARUYAMAITE

KW - CHEMISTRY

UR - http://www.scopus.com/inward/record.url?scp=85095868980&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/2e39dd09-53c3-348e-ae06-57aa42f2e656/

U2 - 10.2138/am-2020-7457

DO - 10.2138/am-2020-7457

M3 - Article

AN - SCOPUS:85095868980

VL - 105

SP - 1589

EP - 1592

JO - American Mineralogist

JF - American Mineralogist

SN - 0003-004X

IS - 10

ER -

ID: 61266994