Standard

Equation of state of nitrogen-bearing K-cymrite. / Romanenko, Alexandr V.; Rashchenko, Sergey V.; Sokol, Alexander G. et al.

In: Physics and Chemistry of Minerals, Vol. 53, No. 2, 23.03.2026.

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

Harvard

Romanenko, AV, Rashchenko, SV, Sokol, AG & Korsakov, AV 2026, 'Equation of state of nitrogen-bearing K-cymrite', Physics and Chemistry of Minerals, vol. 53, no. 2. https://doi.org/10.1007/s00269-026-01346-y

APA

Romanenko, A. V., Rashchenko, S. V., Sokol, A. G., & Korsakov, A. V. (2026). Equation of state of nitrogen-bearing K-cymrite. Physics and Chemistry of Minerals, 53(2). https://doi.org/10.1007/s00269-026-01346-y

Vancouver

Romanenko AV, Rashchenko SV, Sokol AG, Korsakov AV. Equation of state of nitrogen-bearing K-cymrite. Physics and Chemistry of Minerals. 2026 Mar 23;53(2). doi: 10.1007/s00269-026-01346-y

Author

Romanenko, Alexandr V. ; Rashchenko, Sergey V. ; Sokol, Alexander G. et al. / Equation of state of nitrogen-bearing K-cymrite. In: Physics and Chemistry of Minerals. 2026 ; Vol. 53, No. 2.

BibTeX

@article{30ac1065d44c49cf84e155feec41265f,
title = "Equation of state of nitrogen-bearing K-cymrite",
abstract = "Nitrogen-bearing K-cymrite (K, NH4)AlSi3O8·(N2,NH3,H2O), a clathrate phase that is stable in subduction zones, may play a crucial role in transporting potassium, water, and nitrogen to the depths of the mantle. Synchrotron X-ray diffraction in a diamond anvil cell with a methanol-ethanol medium was used to study its compressibility up to 10 GPa. N-bearing K-cymrite retains its hexagonal P6/mmm symmetry without signs of phase transitions across the pressure range. The third-order Birch-Murnaghan equation of state yielded the following values: V0 = 191.38(3) {\AA}3, K0 = 47.1(2) GPa, and K0{\textquoteright} = 6.40(7). Unlike K-cymrite KAlSi3O8·H2O, which develops incommensurate modulation above 7–8 GPa, no satellite reflections appear in the diffraction patterns of N-bearing K-cymrite, even at 16 GPa. This suggests that N2 stabilizes the double tetrahedral layers against wave-like bending.",
keywords = "K-cymrite, deep nitrogen cycle, diamond anvil cell, high pressure, К-цимрит, алмазная наковальня, высокое давление, глубинный цикл азота",
author = "Romanenko, {Alexandr V.} and Rashchenko, {Sergey V.} and Sokol, {Alexander G.} and Korsakov, {Andrey V.}",
note = "Romanenko, A.V., Rashchenko, S.V., Sokol, A.G. et al. Equation of state of nitrogen-bearing K-cymrite. Phys Chem Minerals 53, 13 (2026). https://doi.org/10.1007/s00269-026-01346-y This study is supported by the Russian Science Foundation (project 23-77-10047).",
year = "2026",
month = mar,
day = "23",
doi = "10.1007/s00269-026-01346-y",
language = "English",
volume = "53",
journal = "Physics and Chemistry of Minerals",
issn = "0342-1791",
publisher = "Springer",
number = "2",

}

RIS

TY - JOUR

T1 - Equation of state of nitrogen-bearing K-cymrite

AU - Romanenko, Alexandr V.

AU - Rashchenko, Sergey V.

AU - Sokol, Alexander G.

AU - Korsakov, Andrey V.

N1 - Romanenko, A.V., Rashchenko, S.V., Sokol, A.G. et al. Equation of state of nitrogen-bearing K-cymrite. Phys Chem Minerals 53, 13 (2026). https://doi.org/10.1007/s00269-026-01346-y This study is supported by the Russian Science Foundation (project 23-77-10047).

PY - 2026/3/23

Y1 - 2026/3/23

N2 - Nitrogen-bearing K-cymrite (K, NH4)AlSi3O8·(N2,NH3,H2O), a clathrate phase that is stable in subduction zones, may play a crucial role in transporting potassium, water, and nitrogen to the depths of the mantle. Synchrotron X-ray diffraction in a diamond anvil cell with a methanol-ethanol medium was used to study its compressibility up to 10 GPa. N-bearing K-cymrite retains its hexagonal P6/mmm symmetry without signs of phase transitions across the pressure range. The third-order Birch-Murnaghan equation of state yielded the following values: V0 = 191.38(3) Å3, K0 = 47.1(2) GPa, and K0’ = 6.40(7). Unlike K-cymrite KAlSi3O8·H2O, which develops incommensurate modulation above 7–8 GPa, no satellite reflections appear in the diffraction patterns of N-bearing K-cymrite, even at 16 GPa. This suggests that N2 stabilizes the double tetrahedral layers against wave-like bending.

AB - Nitrogen-bearing K-cymrite (K, NH4)AlSi3O8·(N2,NH3,H2O), a clathrate phase that is stable in subduction zones, may play a crucial role in transporting potassium, water, and nitrogen to the depths of the mantle. Synchrotron X-ray diffraction in a diamond anvil cell with a methanol-ethanol medium was used to study its compressibility up to 10 GPa. N-bearing K-cymrite retains its hexagonal P6/mmm symmetry without signs of phase transitions across the pressure range. The third-order Birch-Murnaghan equation of state yielded the following values: V0 = 191.38(3) Å3, K0 = 47.1(2) GPa, and K0’ = 6.40(7). Unlike K-cymrite KAlSi3O8·H2O, which develops incommensurate modulation above 7–8 GPa, no satellite reflections appear in the diffraction patterns of N-bearing K-cymrite, even at 16 GPa. This suggests that N2 stabilizes the double tetrahedral layers against wave-like bending.

KW - K-cymrite

KW - deep nitrogen cycle

KW - diamond anvil cell

KW - high pressure

KW - К-цимрит

KW - алмазная наковальня

KW - высокое давление

KW - глубинный цикл азота

UR - https://www.mendeley.com/catalogue/ce858ca3-e82e-3639-94e0-99517b1d037d/

UR - https://www.scopus.com/pages/publications/105034619877

U2 - 10.1007/s00269-026-01346-y

DO - 10.1007/s00269-026-01346-y

M3 - Article

VL - 53

JO - Physics and Chemistry of Minerals

JF - Physics and Chemistry of Minerals

SN - 0342-1791

IS - 2

ER -

ID: 85025552