Glikinite, Zn 3 O(SO 4 ) 2 , a new anhydrous zinc oxysulfate mineral structurally based on OZn4 tetrahedra

Evgeny V. Nazarchuk, Oleg I. Siidra, Diana O. Nekrasova , Vladimir V. Shilovskikh , Artem S. Borisov, Evgeniya Y. Avdontseva

Результат исследований: Научные публикации в периодических изданияхстатья

Аннотация

A new mineral glikinite, ideally Zn3O(SO4)2, was found in high-temperature exhalative mineral assemblages in the Arsenatnaya fumarole, Second scoria cone of the Great Tolbachik Fissure Eruption (1975–1976), Tolbachik volcano, Kamchatka Peninsula, Russia. Glikinite is associated closely with langbeinite, lammerite-β, bradaczekite, euchlorine, anhydrite, chalcocyanite and tenorite. It is monoclinic, P21/m, a = 7.298(18), b = 6.588(11), c = 7.840(12) Å, β = 117.15(3)°, V = 335.4(11) Å3 and R1 = 0.046. The eight strongest lines of the powder X-ray diffraction pattern [d in Å (I) (hkl)] are: 6.969(56)(00 ), 3.942(52)(101), 3.483(100)(00 ), 3.294(49)(020), 2.936(43)(120), 2.534(63)(201), 2.501(63)(20 ) and 2.395(86)(02 ). The chemical composition determined by electron-microprobe analysis is (wt.%): ZnO 42.47, CuO 19.50, SO3 39.96, total 101.93. The empirical formula calculated on the basis of O = 9 apfu is Zn2.07Cu0.97S1.98O9 and the simplified formula is Zn3O(SO4)2. Glikinite is a Zn,Cu analogue of synthetic Zn3O(SO4)2. The crystal structure of glikinite is based on OZn4 tetrahedra sharing common corners, thus forming [Zn3O]4+ chains. Sulfate groups interconnect [Zn3O]4+ chains into a 3D framework.

Язык оригиналаанглийский
ЖурналMineralogical Magazine
Том2020
Номер выпуска1-5
Ранняя дата в режиме онлайн30 апр 2020
СостояниеОпубликовано - авг 2020

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