TY - JOUR
T1 - Nazarovite, Ni12P5, a new terrestrial and meteoritic mineral structurally related to nickelphosphide, Ni3P
AU - Britvin, Sergey N.
AU - Murashko, Mikhail N.
AU - Krzhizhanovskaya, Maria G.
AU - Vereshchagin, Oleg S.
AU - Vapnik, Yevgeny
AU - Shilovskikh, Vladimir V.
AU - Lozhkin, Maksim S.
AU - Obolonskaya, Edita V.
N1 - Funding Information: This study was funded by the Russian Science Foundation, grant 18-17-00079. The authors are indebted to the curators of the Mining Museum, St. Petersburg Mining Institute, for the specimen of the Marjalahti pallasite provided for this study. We gratefully acknowledge the referees, Laurence Garvie and Michael Zolensky, for helpful comments and suggestions, and the Technical Editor for the crystallographic data corrections. This paper has benefited from editorial handling by Daniel Hummer. The authors are thankful to the X‑ray Diffraction Centre, Centre for Microscopy and Microanalysis, Nanophotonics, Nanotechnology and Geomodel Resource Centres of St. Petersburg State University for the access to instrumental and computational resources. Publisher Copyright: © 2022 Mineralogical Society of America.
PY - 2022/10/1
Y1 - 2022/10/1
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. The crystal structure of terrestrial nazarovite was solved and refined on the basis of Xray single-crystal data (R1 = 0.0516), whereas the structure of meteoritic mineral was refined by the Rietveld method using an Xray 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. The crystal structure of terrestrial nazarovite was solved and refined on the basis of Xray single-crystal data (R1 = 0.0516), whereas the structure of meteoritic mineral was refined by the Rietveld method using an Xray 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.
KW - crystal structure
KW - Fe-Ni-P system
KW - meteorite
KW - nanoprecipitates
KW - NiP
KW - nickelphosphide
KW - planetary interiors
KW - pyrometamorphism
UR - http://www.scopus.com/inward/record.url?scp=85122238866&partnerID=8YFLogxK
U2 - https://doi.org/10.2138/am-2022-8219
DO - https://doi.org/10.2138/am-2022-8219
M3 - Article
SN - 0003-004X
VL - 107
SP - 1946
EP - 1951
JO - American Mineralogist
JF - American Mineralogist
IS - 10
ER -