Standard

Deltalumite, a New Natural Modification of Alumina with a Spinel-Type Structure. / Pekov, I. V.; Anikin, I. P.; Chukanov, N. V.; Belakovskiy, D. I.; Yapaskurt, V. O.; Sidorov, E. G.; Britvin, S. N.; Zubkova, N. V.

In: Geology of Ore Deposits, Vol. 62, No. 7, 12.2020, p. 608-617.

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

Harvard

Pekov, IV, Anikin, IP, Chukanov, NV, Belakovskiy, DI, Yapaskurt, VO, Sidorov, EG, Britvin, SN & Zubkova, NV 2020, 'Deltalumite, a New Natural Modification of Alumina with a Spinel-Type Structure', Geology of Ore Deposits, vol. 62, no. 7, pp. 608-617. https://doi.org/10.1134/S1075701520070089

APA

Pekov, I. V., Anikin, I. P., Chukanov, N. V., Belakovskiy, D. I., Yapaskurt, V. O., Sidorov, E. G., Britvin, S. N., & Zubkova, N. V. (2020). Deltalumite, a New Natural Modification of Alumina with a Spinel-Type Structure. Geology of Ore Deposits, 62(7), 608-617. https://doi.org/10.1134/S1075701520070089

Vancouver

Pekov IV, Anikin IP, Chukanov NV, Belakovskiy DI, Yapaskurt VO, Sidorov EG et al. Deltalumite, a New Natural Modification of Alumina with a Spinel-Type Structure. Geology of Ore Deposits. 2020 Dec;62(7):608-617. https://doi.org/10.1134/S1075701520070089

Author

Pekov, I. V. ; Anikin, I. P. ; Chukanov, N. V. ; Belakovskiy, D. I. ; Yapaskurt, V. O. ; Sidorov, E. G. ; Britvin, S. N. ; Zubkova, N. V. / Deltalumite, a New Natural Modification of Alumina with a Spinel-Type Structure. In: Geology of Ore Deposits. 2020 ; Vol. 62, No. 7. pp. 608-617.

BibTeX

@article{945f51a796d34c8fa3e7189ff4c776ac,
title = "Deltalumite, a New Natural Modification of Alumina with a Spinel-Type Structure",
abstract = "Abstract: A new mineral, deltalumite, which is an analogue of the spinel-type synthetic δ-Al2O3, the second natural modification of alumina after corundum, α-Al2O3, has been found in products of two eruptions of the Ploskiy Tolbachik Volcano, Kamchatka, Russia. It occurs in the pores of basalt lava and basalt scoria altered by fumarolic gas. The mineral forms roundish segregations up to 0.2 mm across, which consist of blocky coarse prismatic individuals of up to 0.03 mm. Deltalumite is pale yellowish, pale beige, or white, translucent, with a vitreous luster. The mineral is brittle. Dcalc = 3.663 g/cm3. Deltalumite is optically uniaxial, negative, ω = 1.654(2), ε = 1.653(2) (λ = 589 nm). The chemical composition (electron microprobe data) is, wt %: 99.74 Al2O3 and 0.04 SiO2; the total is 99.78. The strongest reflections of the powder X-ray diffraction pattern [d, {\AA}(I)(hkl)] are: 2.728(61)(202), 2.424(51)(212), 2.408(49)(213), 2.281(42)(206), 1.993(81)(1.0.11, 220, 221), 1.954(48)(0.0.12), and 1.396(100)(327, 400, 2.1.14). The mineral is tetragonal, with the P-4m2 space group (similar to synthetic δ-Al2O3). The unit-cell dimensions are a = 5.608(1), c = 23.513(7) {\AA}, V = 739.4(4) {\AA}3, and Z = 16. Deltalumite belongs to the spinel subgroup within the oxy-spinel group; its structural formula can be written as (Al0.67◻0.33)Al2O4, where ◻ is a vacancy. The new mineral can be clearly distinguished from other modifications of alumina using its powder X-ray diffraction pattern or IR spectrum.",
keywords = "delta modification of alumina, deltalumite, fumarole, Kamchatka, new mineral, oxyspinel group, spinel supergroup, Tolbachik Volcano",
author = "Pekov, {I. V.} and Anikin, {I. P.} and Chukanov, {N. V.} and Belakovskiy, {D. I.} and Yapaskurt, {V. O.} and Sidorov, {E. G.} and Britvin, {S. N.} and Zubkova, {N. V.}",
note = "Publisher Copyright: {\textcopyright} 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",
year = "2020",
month = dec,
doi = "10.1134/S1075701520070089",
language = "English",
volume = "62",
pages = "608--617",
journal = "Geology of Ore Deposits",
issn = "1075-7015",
publisher = "МАИК {"}Наука/Интерпериодика{"}",
number = "7",

}

RIS

TY - JOUR

T1 - Deltalumite, a New Natural Modification of Alumina with a Spinel-Type Structure

AU - Pekov, I. V.

AU - Anikin, I. P.

AU - Chukanov, N. V.

AU - Belakovskiy, D. I.

AU - Yapaskurt, V. O.

AU - Sidorov, E. G.

AU - Britvin, S. N.

AU - Zubkova, N. V.

N1 - Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2020/12

Y1 - 2020/12

N2 - Abstract: A new mineral, deltalumite, which is an analogue of the spinel-type synthetic δ-Al2O3, the second natural modification of alumina after corundum, α-Al2O3, has been found in products of two eruptions of the Ploskiy Tolbachik Volcano, Kamchatka, Russia. It occurs in the pores of basalt lava and basalt scoria altered by fumarolic gas. The mineral forms roundish segregations up to 0.2 mm across, which consist of blocky coarse prismatic individuals of up to 0.03 mm. Deltalumite is pale yellowish, pale beige, or white, translucent, with a vitreous luster. The mineral is brittle. Dcalc = 3.663 g/cm3. Deltalumite is optically uniaxial, negative, ω = 1.654(2), ε = 1.653(2) (λ = 589 nm). The chemical composition (electron microprobe data) is, wt %: 99.74 Al2O3 and 0.04 SiO2; the total is 99.78. The strongest reflections of the powder X-ray diffraction pattern [d, Å(I)(hkl)] are: 2.728(61)(202), 2.424(51)(212), 2.408(49)(213), 2.281(42)(206), 1.993(81)(1.0.11, 220, 221), 1.954(48)(0.0.12), and 1.396(100)(327, 400, 2.1.14). The mineral is tetragonal, with the P-4m2 space group (similar to synthetic δ-Al2O3). The unit-cell dimensions are a = 5.608(1), c = 23.513(7) Å, V = 739.4(4) Å3, and Z = 16. Deltalumite belongs to the spinel subgroup within the oxy-spinel group; its structural formula can be written as (Al0.67◻0.33)Al2O4, where ◻ is a vacancy. The new mineral can be clearly distinguished from other modifications of alumina using its powder X-ray diffraction pattern or IR spectrum.

AB - Abstract: A new mineral, deltalumite, which is an analogue of the spinel-type synthetic δ-Al2O3, the second natural modification of alumina after corundum, α-Al2O3, has been found in products of two eruptions of the Ploskiy Tolbachik Volcano, Kamchatka, Russia. It occurs in the pores of basalt lava and basalt scoria altered by fumarolic gas. The mineral forms roundish segregations up to 0.2 mm across, which consist of blocky coarse prismatic individuals of up to 0.03 mm. Deltalumite is pale yellowish, pale beige, or white, translucent, with a vitreous luster. The mineral is brittle. Dcalc = 3.663 g/cm3. Deltalumite is optically uniaxial, negative, ω = 1.654(2), ε = 1.653(2) (λ = 589 nm). The chemical composition (electron microprobe data) is, wt %: 99.74 Al2O3 and 0.04 SiO2; the total is 99.78. The strongest reflections of the powder X-ray diffraction pattern [d, Å(I)(hkl)] are: 2.728(61)(202), 2.424(51)(212), 2.408(49)(213), 2.281(42)(206), 1.993(81)(1.0.11, 220, 221), 1.954(48)(0.0.12), and 1.396(100)(327, 400, 2.1.14). The mineral is tetragonal, with the P-4m2 space group (similar to synthetic δ-Al2O3). The unit-cell dimensions are a = 5.608(1), c = 23.513(7) Å, V = 739.4(4) Å3, and Z = 16. Deltalumite belongs to the spinel subgroup within the oxy-spinel group; its structural formula can be written as (Al0.67◻0.33)Al2O4, where ◻ is a vacancy. The new mineral can be clearly distinguished from other modifications of alumina using its powder X-ray diffraction pattern or IR spectrum.

KW - delta modification of alumina

KW - deltalumite

KW - fumarole

KW - Kamchatka

KW - new mineral

KW - oxyspinel group

KW - spinel supergroup

KW - Tolbachik Volcano

UR - http://www.scopus.com/inward/record.url?scp=85100806056&partnerID=8YFLogxK

U2 - 10.1134/S1075701520070089

DO - 10.1134/S1075701520070089

M3 - Article

AN - SCOPUS:85100806056

VL - 62

SP - 608

EP - 617

JO - Geology of Ore Deposits

JF - Geology of Ore Deposits

SN - 1075-7015

IS - 7

ER -

ID: 76725503