Ryabchikovite, CuMg(Si2O6), a new pyroxene group mineral, and some genetic features of natural anhydrous copper silicates

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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.

In: American Mineralogist, 01.10.2022.

Research output: Contribution to journal › Article › peer-review

Author

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. / Ryabchikovite, CuMg(Si2O6), a new pyroxene group mineral, and some genetic features of natural anhydrous copper silicates. In: American Mineralogist. 2022.

BibTeX

@article{be52c93e71904523b0dde27b20dc45fe,

title = "Ryabchikovite, CuMg(Si2O6), a new pyroxene group mineral, and some genetic features of natural anhydrous copper silicates",

abstract = "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) {\AA}, β = 110.00(6)°, V = 426.3(7) {\AA}3 , 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).",

keywords = "ryabchikovite, new mineral, Pyroxenes, fumarole sublimate, copper silicate, Gas transport reactions, Tolbachik Volcano",

author = "Shchipalkina, {Nadezhda V.} and Vereshchagin, {Oleg S.} and Pekov, {Igor V.} and Belakovskiy, {Dmitry I.} and Koshlyakova, {Natalia N.} and Shilovskikh, {Vladimir V.} and Pankin, {Dmitriy V.} and Britvin, {Sergey N.} and Sandalov, {Fedor D.} and Sidorov, {Evgeny G.}",

year = "2022",

month = oct,

day = "1",

doi = "10.2138/am-2022-8620",

language = "English",

journal = "American Mineralogist",

issn = "0003-004X",

publisher = "Mineralogical Society of America",

}

RIS

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