TY - JOUR

T1 - Nazarovite, Ni12P5, a new terrestrial and meteoritic mineral structurally related to nickelphosphide, Ni3P

AU - Бритвин, Сергей Николаевич

AU - Мурашко, Михаил Николаевич

AU - Кржижановская, Мария Георгиевна

AU - Верещагин, Олег Сергеевич

AU - Vapnik, Yevgeny

AU - Шиловских, Владимир Владимирович

AU - Ложкин, Максим Сергеевич

AU - Оболонская, Э. В.

PY - 2021/10

Y1 - 2021/10

N2 - Nazarovite, Ni12P5, is a new natural phosphide discovered on Earth and in meteorites. Terrestrial nazarovite originates from phosphide assemblages confined to pyrometamorphic suite of the Hatrurim Formation (the Mottled Zone), the Dead Sea basin, Negev desert, Israel. Meteoritic nazarovite was identified among Ni-rich phosphide precipitates extracted from the Marjalahti meteorite (main group pallasite). Terrestrial mineral occurs as micrometer-sized lamella intergrown with transjordanite (Ni2P). Meteoritic nazarovite forms chisel-like crystals up to 8 μm long. The mineral is tetragonal, space group I4/m. The unit-cell parameters of terrestrial and meteoritic material, respectively: a 8.640(1) and 8.6543(3), c 5.071(3) and 5.0665(2) Å, V 378.5(2) and 379.47(3) Å3, Z = 2. Crystal structure of terrestrial nazarovite was solved and refined on the basis of X-ray single-crystal data (R1 = 0.0516), whereas the structure of meteoritic mineral was refined by the Rietveld method using an X-ray powder diffraction profile (RB = 0.22 %). The mineral is structurally similar to phosphides of schreibersite–nickelphosphide join, Fe3P–Ni3P. Chemical composition of nazarovite (terrestrial/meteoritic, electron microprobe, wt.%): Ni 81.87/78.59, Fe <0.2/4.10; Co <0.2/0.07, P 18.16/17.91, Total 100.03/100.67, leading to the empirical formula Ni11.97P5.03 and (Ni11.43Fe0.63Co0.01)12.07P4.94, based on 17 atoms per formula unit. Nazarovite formation in nature, both on Earth and in meteorites, is related to the processes of Fe/Ni fractionation in solid state, at temperatures below 1100 °C.

AB - Nazarovite, Ni12P5, is a new natural phosphide discovered on Earth and in meteorites. Terrestrial nazarovite originates from phosphide assemblages confined to pyrometamorphic suite of the Hatrurim Formation (the Mottled Zone), the Dead Sea basin, Negev desert, Israel. Meteoritic nazarovite was identified among Ni-rich phosphide precipitates extracted from the Marjalahti meteorite (main group pallasite). Terrestrial mineral occurs as micrometer-sized lamella intergrown with transjordanite (Ni2P). Meteoritic nazarovite forms chisel-like crystals up to 8 μm long. The mineral is tetragonal, space group I4/m. The unit-cell parameters of terrestrial and meteoritic material, respectively: a 8.640(1) and 8.6543(3), c 5.071(3) and 5.0665(2) Å, V 378.5(2) and 379.47(3) Å3, Z = 2. Crystal structure of terrestrial nazarovite was solved and refined on the basis of X-ray single-crystal data (R1 = 0.0516), whereas the structure of meteoritic mineral was refined by the Rietveld method using an X-ray powder diffraction profile (RB = 0.22 %). The mineral is structurally similar to phosphides of schreibersite–nickelphosphide join, Fe3P–Ni3P. Chemical composition of nazarovite (terrestrial/meteoritic, electron microprobe, wt.%): Ni 81.87/78.59, Fe <0.2/4.10; Co <0.2/0.07, P 18.16/17.91, Total 100.03/100.67, leading to the empirical formula Ni11.97P5.03 and (Ni11.43Fe0.63Co0.01)12.07P4.94, based on 17 atoms per formula unit. Nazarovite formation in nature, both on Earth and in meteorites, is related to the processes of Fe/Ni fractionation in solid state, at temperatures below 1100 °C.

UR - https://www.mendeley.com/catalogue/164ddb4b-4a99-3a53-af95-cb6bf152f8e8/

U2 - 10.2138/am-2022-8219

DO - 10.2138/am-2022-8219

M3 - Article

JO - American Mineralogist

JF - American Mineralogist

SN - 0003-004X

ER -