Koksharovite, CaMg2Fe43+(VO4)(6), and grigorievite, Cu3Fe23+Al2(VO4)(6), two new howardevansite-group minerals from volcanic exhalations

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Koksharovite, CaMg2Fe43+(VO4)(6), and grigorievite, Cu3Fe23+Al2(VO4)(6), two new howardevansite-group minerals from volcanic exhalations. / Pekov, I.V.; Zubkova, N.V.; Yapaskurt, V.O.; Kartashov, P.M.; Polekhovsky, Y.S.; Murashko, M.N.; Pushcharovsky, D.Y.

In: European Journal of Mineralogy, Vol. 26, No. 5, 2014, p. 679-688.

Research output: Contribution to journal › Article

Author

Pekov, I.V. ; Zubkova, N.V. ; Yapaskurt, V.O. ; Kartashov, P.M. ; Polekhovsky, Y.S. ; Murashko, M.N. ; Pushcharovsky, D.Y. / Koksharovite, CaMg2Fe43+(VO4)(6), and grigorievite, Cu3Fe23+Al2(VO4)(6), two new howardevansite-group minerals from volcanic exhalations. In: European Journal of Mineralogy. 2014 ; Vol. 26, No. 5. pp. 679-688.

BibTeX

@article{c77ecf6beb594f17b1b7147c8111fea0,

title = "Koksharovite, CaMg2Fe43+(VO4)(6), and grigorievite, Cu3Fe23+Al2(VO4)(6), two new howardevansite-group minerals from volcanic exhalations",

abstract = "Two new howardevansite-group minerals were discovered in the exhalations of fumaroles related to two volcanoes in Kamchatka, Russia. Koksharovite, CaMg2Fe43+(VO4)(6), is found at the Bezymyannyi volcano in association with bannermanite. Grigorievite, Cu3Fe23+Al2(VO4)(6), associated with bannermanite, ziesite, hematite, etc., was found at the Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano. Koksharovite occurs as equant to prismatic crystals up to 30 x 70 urn. It is translucent, yellowish-brown to reddish-brown with an adamantine lustre. Grigorievite forms prismatic to tabular crystals up to 40 x 100 mu m. It is opaque, black with a semi-metallic lustre. Both minerals are brittle. The VBN hardness is 368 and 489 kg mm(-2), the calculated density (D-calc) 3.39 and 3.67 g cm(-3) for koksharovite and grigorievite, respectively. In reflected light, koksharovite is light grey, grigorievite is grey; both minerals are weakly anisotropic. Reflectance values [k",

author = "I.V. Pekov and N.V. Zubkova and V.O. Yapaskurt and P.M. Kartashov and Y.S. Polekhovsky and M.N. Murashko and D.Y. Pushcharovsky",

year = "2014",

doi = "10.1127/0935-1221/2014/0026-2400",

language = "English",

volume = "26",

pages = "679--688",

journal = "European Journal of Mineralogy",

issn = "0935-1221",

publisher = "SCHWEIZERBART Science Publishers",

number = "5",

}

RIS

TY - JOUR

T1 - Koksharovite, CaMg2Fe43+(VO4)(6), and grigorievite, Cu3Fe23+Al2(VO4)(6), two new howardevansite-group minerals from volcanic exhalations

AU - Pekov, I.V.

AU - Zubkova, N.V.

AU - Yapaskurt, V.O.

AU - Kartashov, P.M.

AU - Polekhovsky, Y.S.

AU - Murashko, M.N.

AU - Pushcharovsky, D.Y.

PY - 2014

Y1 - 2014

N2 - Two new howardevansite-group minerals were discovered in the exhalations of fumaroles related to two volcanoes in Kamchatka, Russia. Koksharovite, CaMg2Fe43+(VO4)(6), is found at the Bezymyannyi volcano in association with bannermanite. Grigorievite, Cu3Fe23+Al2(VO4)(6), associated with bannermanite, ziesite, hematite, etc., was found at the Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano. Koksharovite occurs as equant to prismatic crystals up to 30 x 70 urn. It is translucent, yellowish-brown to reddish-brown with an adamantine lustre. Grigorievite forms prismatic to tabular crystals up to 40 x 100 mu m. It is opaque, black with a semi-metallic lustre. Both minerals are brittle. The VBN hardness is 368 and 489 kg mm(-2), the calculated density (D-calc) 3.39 and 3.67 g cm(-3) for koksharovite and grigorievite, respectively. In reflected light, koksharovite is light grey, grigorievite is grey; both minerals are weakly anisotropic. Reflectance values [k

AB - Two new howardevansite-group minerals were discovered in the exhalations of fumaroles related to two volcanoes in Kamchatka, Russia. Koksharovite, CaMg2Fe43+(VO4)(6), is found at the Bezymyannyi volcano in association with bannermanite. Grigorievite, Cu3Fe23+Al2(VO4)(6), associated with bannermanite, ziesite, hematite, etc., was found at the Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano. Koksharovite occurs as equant to prismatic crystals up to 30 x 70 urn. It is translucent, yellowish-brown to reddish-brown with an adamantine lustre. Grigorievite forms prismatic to tabular crystals up to 40 x 100 mu m. It is opaque, black with a semi-metallic lustre. Both minerals are brittle. The VBN hardness is 368 and 489 kg mm(-2), the calculated density (D-calc) 3.39 and 3.67 g cm(-3) for koksharovite and grigorievite, respectively. In reflected light, koksharovite is light grey, grigorievite is grey; both minerals are weakly anisotropic. Reflectance values [k

U2 - 10.1127/0935-1221/2014/0026-2400

DO - 10.1127/0935-1221/2014/0026-2400

M3 - Article

VL - 26

SP - 679

EP - 688

JO - European Journal of Mineralogy

JF - European Journal of Mineralogy

SN - 0935-1221

IS - 5

ER -

ID: 7020437