Research output: Contribution to journal › Article › peer-review
Ferrorhodonite, CaMn3Fe[Si5O15], a new mineral species from Broken Hill, New South Wales, Australia. / Shchipalkina, Nadezhda V.; Chukanov, Nikita V.; Pekov, Igor V.; Aksenov, Sergey M.; McCammon, Catherine; Belakovskiy, Dmitry I.; Britvin, Sergey N.; Koshlyakova, Natalya N.; Schäfer, Christof; Scholz, Ricardo; Rastsvetaeva, Ramiza K.
In: Physics and Chemistry of Minerals, Vol. 44, No. 5, 01.05.2017, p. 323-334.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Ferrorhodonite, CaMn3Fe[Si5O15], a new mineral species from Broken Hill, New South Wales, Australia
AU - Shchipalkina, Nadezhda V.
AU - Chukanov, Nikita V.
AU - Pekov, Igor V.
AU - Aksenov, Sergey M.
AU - McCammon, Catherine
AU - Belakovskiy, Dmitry I.
AU - Britvin, Sergey N.
AU - Koshlyakova, Natalya N.
AU - Schäfer, Christof
AU - Scholz, Ricardo
AU - Rastsvetaeva, Ramiza K.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - The new mineral ferrorhodonite, a Mn2+–Fe2+ ordered analogue of rhodonite with the idealized formula CaMn3Fe[Si5O15], was found in the manganese-rich metamorphic rocks of the Broken Hill Pb–Zn–Ag deposit, Yancowinna Co., New South Wales, Australia. Ferrorhodonite occurs as brownish red coarsely crystalline aggregates in association with galena, chalcopyrite, spessartine, and quartz. The mineral is brittle. Its Mohs hardness is 6. Cleavage is perfect on {201} and good on {021} and {210}. The measured and calculated values of density are 3.71 (2) and 3.701 g cm−3, respectively. Ferrorhodonite is optically biaxial positive, with α = 1.731 (4), β = 1.736 (4), γ = 1.745 (5) and 2 V (meas.) = 80 (10)°. The average chemical composition of ferrorhodonite is (electron-microprobe data, wt%): CaO 7.09, MgO 0.24, MnO 32.32, FeO 14.46, ZnO 0.36, SiO2 46.48, and total 100.95. The empirical formula calculated on 15 O apfu (Z = 2) is Ca0.81Mn2.92Fe1.29Mg0.04Zn0.03Si4.96O15. The Mössbauer and IR spectra are reported. The strongest reflections in the powder X-ray diffraction pattern [(d, Å (I, %) (hkl)] are: 3.337 (32) (−1–13), 3.132 (54) (−210), 3.091 (41) (0–23), 2.968 (100) (−2–11), 2.770 (91) (022), 2.223 (34) (−204), 2.173 (30) (−310). Ferrorhodonite is isostructural with rhodonite. The crystal structure was solved based on single-crystal X-ray diffraction data and refined to R1 = 4.02% [for 3114 reflections with I > 2σ(I)]. The mineral is triclinic, space group P1 ¯ , a = 6.6766 (5), b = 7.6754 (6), c = 11.803 (1) Å, α = 105.501 (1)°, β = 92.275 (1)°, γ = 93.919 (1)°; V = 580.44 (1). The crystal-chemical formula of ferrorhodonite inferred to be: M5(Ca0.81Mn0.19) M1−3(Mn2.52Fe0.48) M4(Fe0.81 2+Mn0.12Mg0.04Zn0.03) [Si5O15].
AB - The new mineral ferrorhodonite, a Mn2+–Fe2+ ordered analogue of rhodonite with the idealized formula CaMn3Fe[Si5O15], was found in the manganese-rich metamorphic rocks of the Broken Hill Pb–Zn–Ag deposit, Yancowinna Co., New South Wales, Australia. Ferrorhodonite occurs as brownish red coarsely crystalline aggregates in association with galena, chalcopyrite, spessartine, and quartz. The mineral is brittle. Its Mohs hardness is 6. Cleavage is perfect on {201} and good on {021} and {210}. The measured and calculated values of density are 3.71 (2) and 3.701 g cm−3, respectively. Ferrorhodonite is optically biaxial positive, with α = 1.731 (4), β = 1.736 (4), γ = 1.745 (5) and 2 V (meas.) = 80 (10)°. The average chemical composition of ferrorhodonite is (electron-microprobe data, wt%): CaO 7.09, MgO 0.24, MnO 32.32, FeO 14.46, ZnO 0.36, SiO2 46.48, and total 100.95. The empirical formula calculated on 15 O apfu (Z = 2) is Ca0.81Mn2.92Fe1.29Mg0.04Zn0.03Si4.96O15. The Mössbauer and IR spectra are reported. The strongest reflections in the powder X-ray diffraction pattern [(d, Å (I, %) (hkl)] are: 3.337 (32) (−1–13), 3.132 (54) (−210), 3.091 (41) (0–23), 2.968 (100) (−2–11), 2.770 (91) (022), 2.223 (34) (−204), 2.173 (30) (−310). Ferrorhodonite is isostructural with rhodonite. The crystal structure was solved based on single-crystal X-ray diffraction data and refined to R1 = 4.02% [for 3114 reflections with I > 2σ(I)]. The mineral is triclinic, space group P1 ¯ , a = 6.6766 (5), b = 7.6754 (6), c = 11.803 (1) Å, α = 105.501 (1)°, β = 92.275 (1)°, γ = 93.919 (1)°; V = 580.44 (1). The crystal-chemical formula of ferrorhodonite inferred to be: M5(Ca0.81Mn0.19) M1−3(Mn2.52Fe0.48) M4(Fe0.81 2+Mn0.12Mg0.04Zn0.03) [Si5O15].
KW - Australia
KW - Broken Hill
KW - Cation order
KW - Crystal structure
KW - Ferrorhodonite
KW - Mössbauer spectroscopy
KW - New mineral species
KW - Pyroxenoid
KW - Rhodonite
UR - http://www.scopus.com/inward/record.url?scp=84995792513&partnerID=8YFLogxK
U2 - 10.1007/s00269-016-0860-3
DO - 10.1007/s00269-016-0860-3
M3 - Article
AN - SCOPUS:84995792513
VL - 44
SP - 323
EP - 334
JO - Physics and Chemistry of Minerals
JF - Physics and Chemistry of Minerals
SN - 0342-1791
IS - 5
ER -
ID: 9274395