Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Ryabchikovite, CuMg(Si2O6), a new pyroxene group mineral, and some genetic features of natural anhydrous copper silicates. / Shchipalkina, Nadezhda V.; Vereshchagin , Oleg S.; Pekov, Igor V.; Belakovskiy, Dmitry I.; Koshlyakova, Natalia N. ; Shilovskikh , Vladimir V.; Pankin , Dmitriy V.; Britvin , Sergey N.; Sandalov, Fedor D.; Sidorov, Evgeny G.
в: American Mineralogist, 01.10.2022.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Ryabchikovite, CuMg(Si2O6), a new pyroxene group mineral, and some genetic features of natural anhydrous copper silicates
AU - Shchipalkina, Nadezhda V.
AU - Vereshchagin , Oleg S.
AU - Pekov, Igor V.
AU - Belakovskiy, Dmitry I.
AU - Koshlyakova, Natalia N.
AU - Shilovskikh , Vladimir V.
AU - Pankin , Dmitriy V.
AU - Britvin , Sergey N.
AU - Sandalov, Fedor D.
AU - Sidorov, Evgeny G.
PY - 2022/10/1
Y1 - 2022/10/1
N2 - Ryabchikovite, ideally CuMg(Si2O6), a new pyroxene-group mineral (IMA No. 2021-011) was discovered in exhalations of the active Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. The associated minerals are diopside, hematite, cuprospinel, fluorophlogopite, anhydrite, johillerite, tilasite and aphthitalite-group sulfates. Ryabchikovite forms thin (up to 25 μm) light brown to reddish-brown epitactic crusts on short-prismatic brownish-grey crystals of diopside (up to 0.5 mm). The new mineral is optically biaxial (+), α = 1.685(5), β = 1.690(5), γ = 1.703(4), and 2V (meas.) = 60(15)°. The average chemical composition (wt.%, electron microprobe data) is: MgO 18.05, CaO 0.77, CuO 26.46, ZnO 2.23, Al2O3 0.93, Fe2O3 1.89, SiO2 50.10, total 100.43. The empirical formula calculated based on 6 O atoms per formulae unit is (Mg1.05Cu0.78Zn0.06Fe 3+ 0.06Ca0.03)(Si1.96Al0.04O6). Electron backscattered diffraction and powder X-ray diffraction data show that ryabchikovite is a Cu,Mg-ordered analogue of clinoenstatite. Ryabchikovite adopts the space group P21/с and has the following unit-cell parameters: a = 9.731(9), b = 8.929(8), c = 5.221(4) Å, β = 110.00(6)°, V = 426.3(7) Å3 , and Z = 4. Ryabchikovite is named in honor of the outstanding Russian geochemist and petrologist Igor Dmitrievich Ryabchikov (1937-2017). Our studies reveal that copper analogues of rock-forming minerals could be found in fumarolic system. Their crystallization does not require high temperatures or / and pressures (below 500 ºC / Pa).
AB - Ryabchikovite, ideally CuMg(Si2O6), a new pyroxene-group mineral (IMA No. 2021-011) was discovered in exhalations of the active Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. The associated minerals are diopside, hematite, cuprospinel, fluorophlogopite, anhydrite, johillerite, tilasite and aphthitalite-group sulfates. Ryabchikovite forms thin (up to 25 μm) light brown to reddish-brown epitactic crusts on short-prismatic brownish-grey crystals of diopside (up to 0.5 mm). The new mineral is optically biaxial (+), α = 1.685(5), β = 1.690(5), γ = 1.703(4), and 2V (meas.) = 60(15)°. The average chemical composition (wt.%, electron microprobe data) is: MgO 18.05, CaO 0.77, CuO 26.46, ZnO 2.23, Al2O3 0.93, Fe2O3 1.89, SiO2 50.10, total 100.43. The empirical formula calculated based on 6 O atoms per formulae unit is (Mg1.05Cu0.78Zn0.06Fe 3+ 0.06Ca0.03)(Si1.96Al0.04O6). Electron backscattered diffraction and powder X-ray diffraction data show that ryabchikovite is a Cu,Mg-ordered analogue of clinoenstatite. Ryabchikovite adopts the space group P21/с and has the following unit-cell parameters: a = 9.731(9), b = 8.929(8), c = 5.221(4) Å, β = 110.00(6)°, V = 426.3(7) Å3 , and Z = 4. Ryabchikovite is named in honor of the outstanding Russian geochemist and petrologist Igor Dmitrievich Ryabchikov (1937-2017). Our studies reveal that copper analogues of rock-forming minerals could be found in fumarolic system. Their crystallization does not require high temperatures or / and pressures (below 500 ºC / Pa).
KW - ryabchikovite
KW - new mineral
KW - Pyroxenes
KW - fumarole sublimate
KW - copper silicate
KW - Gas transport reactions
KW - Tolbachik Volcano
UR - https://istina.msu.ru/publications/article/491542464/
UR - https://www.researchgate.net/publication/363448705_Ryabchikovite_CuMgSi2O6_a_new_pyroxene_group_mineral_and_some_genetic_features_of_natural_anhydrous_copper_silicates
UR - https://www.mendeley.com/catalogue/19f1c171-c8db-3b7e-8788-a7080ecdab32/
U2 - 10.2138/am-2022-8620
DO - 10.2138/am-2022-8620
M3 - Article
JO - American Mineralogist
JF - American Mineralogist
SN - 0003-004X
ER -
ID: 98563489