TY - JOUR

T1 - Ozerovaite, Na2KAl3(AsO4)4, new mineral species from Tolbachik volcano, Kamchatka peninsula, Russia

AU - Shablinskii, Andrey P.

AU - Filatov, Stanislav K.

AU - Vergasova, Lidiya P.

AU - Avdontseva, Eugeniya YU.

AU - Moskaleva, Svetlana V.

AU - Povolotskiy, Aleksey V.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - 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 ☓ 0.02 ☓ 0.004 mm 3 average size; with aggregates of 0.02–0.3 mm. The empirical formula calculated on the basis of 16 O atoms per formula unit (apfu) is (Na 1.82 K 1.08 ) ∑2.90 (Al 2.62 Fe 0.32 Cu 0.12 Zn 0.02 ) ∑3.08 (As 3.95 P 0.07 ) ∑4.02 O 16 , and the idealised formula is Na 2 KAl 3 (AsO 4 ) 4 . Ozerovaite is orthorhombic: Cmca, a = 10.615(2), b = 20.937(3), c = 6.393(1) Å, V = 1420.9(3) Å 3 , Z = 4. The crystal structure (R 1 = 0.031) is constructed of AlO 6 octahedra and AsO 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 Å, 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, α (calc.) = 1.645, β = 1.667(2), γ = 1.674(2) (589 nm), 2V (meas.) = 58(10)°. 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.

AB - 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 ☓ 0.02 ☓ 0.004 mm 3 average size; with aggregates of 0.02–0.3 mm. The empirical formula calculated on the basis of 16 O atoms per formula unit (apfu) is (Na 1.82 K 1.08 ) ∑2.90 (Al 2.62 Fe 0.32 Cu 0.12 Zn 0.02 ) ∑3.08 (As 3.95 P 0.07 ) ∑4.02 O 16 , and the idealised formula is Na 2 KAl 3 (AsO 4 ) 4 . Ozerovaite is orthorhombic: Cmca, a = 10.615(2), b = 20.937(3), c = 6.393(1) Å, V = 1420.9(3) Å 3 , Z = 4. The crystal structure (R 1 = 0.031) is constructed of AlO 6 octahedra and AsO 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 Å, 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, α (calc.) = 1.645, β = 1.667(2), γ = 1.674(2) (589 nm), 2V (meas.) = 58(10)°. 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.

KW - Arsenate

KW - Fumarolic minerals

KW - Great Tolbachik Fissure Eruption

KW - New mineral

KW - Ozerovaite

KW - Sodium potassium aluminium arsenate

KW - sodium potassium aluminium arsenate

KW - CRYSTAL-STRUCTURE

KW - IRON(III) PHOSPHATE

KW - ARSENATNAYA FUMAROLE

KW - new mineral

KW - ozerovaite

KW - fumarolic minerals

KW - SPECTROSCOPY

KW - ERUPTION

KW - ERYTHRITE

KW - arsenate

UR - http://www.mendeley.com/research/ozerovaite-na2kal3aso44-new-mineral-species-tolbachik-volcano-kamchatka-peninsula-russia

UR - https://www.schweizerbart.de/papers/ejm/detail/31/90541/Ozerovaite_Na2KAl3_AsO4_4_new_mineral_species_from?af=crossref

UR - http://www.scopus.com/inward/record.url?scp=85063612318&partnerID=8YFLogxK

U2 - 10.1127/ejm/2019/0031-2808

DO - 10.1127/ejm/2019/0031-2808

M3 - Article

VL - 31

SP - 159

EP - 166

JO - European Journal of Mineralogy

JF - European Journal of Mineralogy

SN - 0935-1221

IS - 1

ER -