Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Extremely Fluorine-Rich Fluoborite from Fumarolic Exhalations of the Tolbachik Volcano, Kamchatka. / Bulakh, M. O.; Pekov, I. V.; Chukanov, N. V.; Yapaskurt, V. O.; Koshlyakova, N. N.; Britvin, S. N.; Sidorov, E. G.
в: Geology of Ore Deposits, Том 64, № 7, 01.12.2022, стр. 432-441.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Extremely Fluorine-Rich Fluoborite from Fumarolic Exhalations of the Tolbachik Volcano, Kamchatka
AU - Bulakh, M. O.
AU - Pekov, I. V.
AU - Chukanov, N. V.
AU - Yapaskurt, V. O.
AU - Koshlyakova, N. N.
AU - Britvin, S. N.
AU - Sidorov, E. G.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - Abstract: Fluoborite extremely close to the fluorine endmember of the fluoborite Mg3[BO3]F3–hydroxylborite Mg3[BO3](ОН)3 series has been found in exhalations of the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. The proportion of the molecule Mg3[BO3](ОН)3 in it does not exceed 1 mol %. This borate is associated with halite, sylvite, langbeinite- and aphthitalite-group sulfates, anhydrite, krasheninnikovite, sanidine, fluorophlogopite, hematite, tenorite, chubarovite, alluaudite-group arsenates, lammerite, and urusovite. Fluoborite occurs as tiny acicular or hairlike crystals up to 5 mm long assembled in radial, near-parallel or chaotic open-work aggregates up to 10 cm across. Its chemical composition determined by electron microprobe is, wt %: 38.71 Mg, 5.90 B, 25.52 O, 30.83 F, total 100.96; the empirical formula is Mg2.97B1.02O2.98F3.03. The unit-cell parameters calculated from the powder X-ray diffraction pattern are: a = 8.808(4), c = 3.098(2) Å, V = 208.1(3)Å3. The IR and Raman spectra of borates of the fluoborite–hydroxylborite series are given and discussed. Fluoborite occurring in the Arsenatnaya fumarole crystallized at a temperature no lower than 450°C. The fumarolic genetic type is novel for this borate.
AB - Abstract: Fluoborite extremely close to the fluorine endmember of the fluoborite Mg3[BO3]F3–hydroxylborite Mg3[BO3](ОН)3 series has been found in exhalations of the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. The proportion of the molecule Mg3[BO3](ОН)3 in it does not exceed 1 mol %. This borate is associated with halite, sylvite, langbeinite- and aphthitalite-group sulfates, anhydrite, krasheninnikovite, sanidine, fluorophlogopite, hematite, tenorite, chubarovite, alluaudite-group arsenates, lammerite, and urusovite. Fluoborite occurs as tiny acicular or hairlike crystals up to 5 mm long assembled in radial, near-parallel or chaotic open-work aggregates up to 10 cm across. Its chemical composition determined by electron microprobe is, wt %: 38.71 Mg, 5.90 B, 25.52 O, 30.83 F, total 100.96; the empirical formula is Mg2.97B1.02O2.98F3.03. The unit-cell parameters calculated from the powder X-ray diffraction pattern are: a = 8.808(4), c = 3.098(2) Å, V = 208.1(3)Å3. The IR and Raman spectra of borates of the fluoborite–hydroxylborite series are given and discussed. Fluoborite occurring in the Arsenatnaya fumarole crystallized at a temperature no lower than 450°C. The fumarolic genetic type is novel for this borate.
KW - IR spectrum
KW - Kamchatka
KW - Raman spectrum
KW - Tolbachik volcano
KW - fluoborite
KW - fumarole
KW - hydroxylborite
KW - natural fluoroborate
UR - https://www.mendeley.com/catalogue/696d3947-52e1-39a9-8323-d4289f1cb337/
U2 - 10.1134/S1075701522070042
DO - 10.1134/S1075701522070042
M3 - статья
VL - 64
SP - 432
EP - 441
JO - Geology of Ore Deposits
JF - Geology of Ore Deposits
SN - 1075-7015
IS - 7
ER -
ID: 103320914