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Ozerovaite, Na (sub 2) KAl (sub 3) (AsO (sub 4) ) (sub 4) , new mineral species from Tolbachik Volcano, Kamchatka Peninsula, Russia

Andrey P. Shablinskii, Stanislav K. Filatov, Lidiya P. Vergasova, Eugeniya Y. Avdontseva, Svetlana V. Moskaleva and Aleksey V. Povolotskiy
Ozerovaite, Na (sub 2) KAl (sub 3) (AsO (sub 4) ) (sub 4) , new mineral species from Tolbachik Volcano, Kamchatka Peninsula, Russia
European Journal of Mineralogy (October 2018) 31 (1): 159-166

Abstract

The new mineral species ozerovaite was found in the fumarole of the second cinder cone of the Great Tolbachik Fissure Eruption. The colour of ozerovaite varies from colourless to pale yellow. It is insoluble in water. The mineral occurs as tabular crystals, 0.04 X 0.02 X 0.004 mm (super 3) average size; with aggregates of 0.02-0.3 mm. The empirical formula calculated on the basis of 16 O apfu is (Na (sub 1.82) K (sub 1.08) ) (sub Sigma 2.90) (Al (sub 2.62) Fe (sub 0.32) Cu (sub 0.12) Zn (sub 0.02) ) (sub Sigma 3.08) (As (sub 3.95) P (sub 0 .07) ) (sub Sigma 4.02) O (sub 16) , and the idealised formula is Na (sub 2) KAl (sub 3) (AsO (sub 4) ) (sub 4) . Ozerovaite is orthorhombic: Cmca, a = 10.615(2), b = 20.937(3), c = 6.393(1) Aa, V = 1420.9(3) Aa (super 3) , Z = 4. The crystal structure (R (sub 1) = 0.031) is constructed of AlO (sub 6) octahedra and AsO (sub 4) tetrahedra, linked by the corners and edges. Adjacent layers are held together by six- and four-coordinated Na and six-coordinated K polyhedra. The eight strongest diagnostic lines of the X-ray powder diffraction pattern are (I, d in Aa, hkl]: 44, 10.37, -020; 47, 5.47, 200; 47, 4.84, 220; 17, 3.76, 240; 26, 3.07, 061; 83, 2.922, 260; 100, 2.824, 202; and 71, 2.735, 400. Ozerovaite is biaxial, optically negative, alpha (calc.) = 1.645, beta = 1.667(2), gamma = 1.674(2) (589 nm), 2 V (meas.) = 58(10) degrees . Associated minerals are ponomarevite, piypite, dolerophanite, euchlorine, sylvite, lammerite, johillerite, urusovite, bradaczekite, filatovite, hatertite, hematite, tenorite and wrightite. The mineral is named in honour of the Russian scholar Dr. Nina Aleksandrovna Ozerova (1930-2012), for her contributions to geochemistry, geology, metallogeny, ecology and the eco-geochemistry of mercury.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 31
Serial Issue: 1
Title: Ozerovaite, Na (sub 2) KAl (sub 3) (AsO (sub 4) ) (sub 4) , new mineral species from Tolbachik Volcano, Kamchatka Peninsula, Russia
Affiliation: Saint Petersburg State University, Department of Crystallography, St. Petersburg, Russian Federation
Pages: 159-166
Published: 20181020
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Germany
References: 47
Accession Number: 2019-000810
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 7 tables
N55°49'02" - N55°49'02", E160°22'02" - E160°22'02"
Secondary Affiliation: Russian Academy of Sciences, Institute of Silicate Chemistry, RUS, Russian Federation
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201902
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