Standard

Oxo-magnesio-hastingsite, NaCa2(Mg2Fe3+3)(Al2Si6)O22O2, a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania. / Zaitsev, A.N.; Avdontseva, E.Y.; Britvin, S.N.; Demén, A.; Homonnay, Z.; Jeffries, T.E.; Keller, J.; Krivovichev, V.G.; Markl, G.; Platonova, N.V.; Siidra, O.I.; Spratt, J.; Vennemann, T.

In: Mineralogical Magazine, Vol. 77, No. 6, 2013, p. 2773-2792.

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

Harvard

Zaitsev, AN, Avdontseva, EY, Britvin, SN, Demén, A, Homonnay, Z, Jeffries, TE, Keller, J, Krivovichev, VG, Markl, G, Platonova, NV, Siidra, OI, Spratt, J & Vennemann, T 2013, 'Oxo-magnesio-hastingsite, NaCa2(Mg2Fe3+3)(Al2Si6)O22O2, a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania', Mineralogical Magazine, vol. 77, no. 6, pp. 2773-2792. https://doi.org/10.1180/minmag.2013.077.6.06

APA

Zaitsev, A. N., Avdontseva, E. Y., Britvin, S. N., Demén, A., Homonnay, Z., Jeffries, T. E., Keller, J., Krivovichev, V. G., Markl, G., Platonova, N. V., Siidra, O. I., Spratt, J., & Vennemann, T. (2013). Oxo-magnesio-hastingsite, NaCa2(Mg2Fe3+3)(Al2Si6)O22O2, a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania. Mineralogical Magazine, 77(6), 2773-2792. https://doi.org/10.1180/minmag.2013.077.6.06

Vancouver

Zaitsev AN, Avdontseva EY, Britvin SN, Demén A, Homonnay Z, Jeffries TE et al. Oxo-magnesio-hastingsite, NaCa2(Mg2Fe3+3)(Al2Si6)O22O2, a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania. Mineralogical Magazine. 2013;77(6):2773-2792. https://doi.org/10.1180/minmag.2013.077.6.06

Author

Zaitsev, A.N. ; Avdontseva, E.Y. ; Britvin, S.N. ; Demén, A. ; Homonnay, Z. ; Jeffries, T.E. ; Keller, J. ; Krivovichev, V.G. ; Markl, G. ; Platonova, N.V. ; Siidra, O.I. ; Spratt, J. ; Vennemann, T. / Oxo-magnesio-hastingsite, NaCa2(Mg2Fe3+3)(Al2Si6)O22O2, a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania. In: Mineralogical Magazine. 2013 ; Vol. 77, No. 6. pp. 2773-2792.

BibTeX

@article{706c2607d4f84e7bbf492867187bdf6d,
title = "Oxo-magnesio-hastingsite, NaCa2(Mg2Fe3+3)(Al2Si6)O22O2, a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania",
abstract = "Oxo-magnesio-hastingsite, ideally NaCa2(Mg2Fe 3+ 3)(Al2Si6)O22O 2, is a new anhydrous amphibole from the Deeti volcanic cone in the Gregory rift (northern Tanzania). The mineral occurs as megacrysts up to 12 cm in size in crystal-rich tuff. Oxo-magnesio-hastingsite is brown with a vitreous lustre and has a perfect {110} cleavage. The measured density is 3.19(1) g/cm3. Ferri-kaersutite is biaxial (-), a = 1.706 (2), b = 1.715(2), g = 1.720(2) (Na light, 589 nm). 2V (calc.) = 73. Dispersion: r > v, weak; orientation: Y = b; Z ^ c = 8; pleochroism: strong, Z: dark brown, Y: brown, X: light brown. The average chemical formula of the mineral derived from electron microprobe analyses, M{\"o}ssbauer spectroscopy and direct water determination is (Na0.67K0.33)Σ1.00(Ca 1.87Na0.14Mn0.01)Σ2.02(Mg 3.27Fe3+ 1.25Ti0.44Al 0.08)Σ5.04(Al1.80Si6.20O 22)(O1.40OH0.60)Σ2.00. It has monoclinic symmetry, space group C2/m and unit-cell parameters a = 9.8837(3), b = 18.0662(6), c = 5.3107(2) {\AA}, b = 105.278(1)o, V = 914.77(5) {\AA}3, Z = 2. T",
author = "A.N. Zaitsev and E.Y. Avdontseva and S.N. Britvin and A. Dem{\'e}n and Z. Homonnay and T.E. Jeffries and J. Keller and V.G. Krivovichev and G. Markl and N.V. Platonova and O.I. Siidra and J. Spratt and T. Vennemann",
year = "2013",
doi = "10.1180/minmag.2013.077.6.06",
language = "English",
volume = "77",
pages = "2773--2792",
journal = "Mineralogical Magazine",
issn = "0026-461X",
publisher = "Mineralogical Society",
number = "6",

}

RIS

TY - JOUR

T1 - Oxo-magnesio-hastingsite, NaCa2(Mg2Fe3+3)(Al2Si6)O22O2, a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania

AU - Zaitsev, A.N.

AU - Avdontseva, E.Y.

AU - Britvin, S.N.

AU - Demén, A.

AU - Homonnay, Z.

AU - Jeffries, T.E.

AU - Keller, J.

AU - Krivovichev, V.G.

AU - Markl, G.

AU - Platonova, N.V.

AU - Siidra, O.I.

AU - Spratt, J.

AU - Vennemann, T.

PY - 2013

Y1 - 2013

N2 - Oxo-magnesio-hastingsite, ideally NaCa2(Mg2Fe 3+ 3)(Al2Si6)O22O 2, is a new anhydrous amphibole from the Deeti volcanic cone in the Gregory rift (northern Tanzania). The mineral occurs as megacrysts up to 12 cm in size in crystal-rich tuff. Oxo-magnesio-hastingsite is brown with a vitreous lustre and has a perfect {110} cleavage. The measured density is 3.19(1) g/cm3. Ferri-kaersutite is biaxial (-), a = 1.706 (2), b = 1.715(2), g = 1.720(2) (Na light, 589 nm). 2V (calc.) = 73. Dispersion: r > v, weak; orientation: Y = b; Z ^ c = 8; pleochroism: strong, Z: dark brown, Y: brown, X: light brown. The average chemical formula of the mineral derived from electron microprobe analyses, Mössbauer spectroscopy and direct water determination is (Na0.67K0.33)Σ1.00(Ca 1.87Na0.14Mn0.01)Σ2.02(Mg 3.27Fe3+ 1.25Ti0.44Al 0.08)Σ5.04(Al1.80Si6.20O 22)(O1.40OH0.60)Σ2.00. It has monoclinic symmetry, space group C2/m and unit-cell parameters a = 9.8837(3), b = 18.0662(6), c = 5.3107(2) Å, b = 105.278(1)o, V = 914.77(5) Å3, Z = 2. T

AB - Oxo-magnesio-hastingsite, ideally NaCa2(Mg2Fe 3+ 3)(Al2Si6)O22O 2, is a new anhydrous amphibole from the Deeti volcanic cone in the Gregory rift (northern Tanzania). The mineral occurs as megacrysts up to 12 cm in size in crystal-rich tuff. Oxo-magnesio-hastingsite is brown with a vitreous lustre and has a perfect {110} cleavage. The measured density is 3.19(1) g/cm3. Ferri-kaersutite is biaxial (-), a = 1.706 (2), b = 1.715(2), g = 1.720(2) (Na light, 589 nm). 2V (calc.) = 73. Dispersion: r > v, weak; orientation: Y = b; Z ^ c = 8; pleochroism: strong, Z: dark brown, Y: brown, X: light brown. The average chemical formula of the mineral derived from electron microprobe analyses, Mössbauer spectroscopy and direct water determination is (Na0.67K0.33)Σ1.00(Ca 1.87Na0.14Mn0.01)Σ2.02(Mg 3.27Fe3+ 1.25Ti0.44Al 0.08)Σ5.04(Al1.80Si6.20O 22)(O1.40OH0.60)Σ2.00. It has monoclinic symmetry, space group C2/m and unit-cell parameters a = 9.8837(3), b = 18.0662(6), c = 5.3107(2) Å, b = 105.278(1)o, V = 914.77(5) Å3, Z = 2. T

U2 - 10.1180/minmag.2013.077.6.06

DO - 10.1180/minmag.2013.077.6.06

M3 - Article

VL - 77

SP - 2773

EP - 2792

JO - Mineralogical Magazine

JF - Mineralogical Magazine

SN - 0026-461X

IS - 6

ER -

ID: 7378630