Chemical Composition of Metallic Iron Spherules in the Chang'e-5 Lunar Soil.
Saved in:
| Title: | Chemical Composition of Metallic Iron Spherules in the Chang'e-5 Lunar Soil. |
|---|---|
| Authors: | Sorokin, E. M.1 (AUTHOR) egorgeohim@ya.ru, Gerasimov, M. V.2 (AUTHOR), Shklover, V. Ya.3 (AUTHOR), Bondarev, A. V.3 (AUTHOR) |
| Source: | Geochemistry International. Mar2026, Vol. 64 Issue 3, p163-181. 19p. |
| Subject Terms: | *Lunar soil, *Siderophile elements, *Metal nanoparticles, *Moon, *Electron microscopy |
| Abstract: | Nanophase iron metal (npFe0) spherules ranging in size from a few to hundreds of nanometers are a significant component of the regolith of the Moon and other airless bodies affecting the spectrum of electromagnetic wave reflection. Electron microscopy was used to study nanospherules on the surface and within the volume of agglutinate particles from the lunar regolith of Rümker Mons returned to the Earth by the Chang'e-5 mission. The glass hosting the npFe0 spherules was characterized by a noticeable oxygen depletion compared with the surrounding unmelted minerals. The oxygen deficiency of the glass contributed to the formation of npFe0 and the reduction of elements with low affinity for oxygen, in particular, siderophile elements and sulfur. The spherules were enriched in siderophile elements, including Ni and P, and S relative to the host glass. It can be hypothesized that the increased contents of siderophile elements and sulfur are due to the sorption of their reduced species by iron spherules formed in the glass during active mixing of boiling melt produced by a high-speed impact. The feeding glass zone from which these elements were sorbed was estimated to be up to 3–4 radii of the spherules. Thus, npFe0 spherules can act as a kind of repository for siderophile elements and sulfur or as their carrier, when the spherules were ejected into the impact-related vapor cloud. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: enr DbLabel: Energy & Power Source An: 192725277 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Chemical Composition of Metallic Iron Spherules in the Chang'e-5 Lunar Soil. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Sorokin%2C+E%2E+M%2E%22">Sorokin, E. M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> egorgeohim@ya.ru</i><br /><searchLink fieldCode="AR" term="%22Gerasimov%2C+M%2E+V%2E%22">Gerasimov, M. V.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shklover%2C+V%2E+Ya%2E%22">Shklover, V. Ya.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bondarev%2C+A%2E+V%2E%22">Bondarev, A. V.</searchLink><relatesTo>3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Geochemistry+International%22">Geochemistry International</searchLink>. Mar2026, Vol. 64 Issue 3, p163-181. 19p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Lunar+soil%22">Lunar soil</searchLink><br />*<searchLink fieldCode="DE" term="%22Siderophile+elements%22">Siderophile elements</searchLink><br />*<searchLink fieldCode="DE" term="%22Metal+nanoparticles%22">Metal nanoparticles</searchLink><br />*<searchLink fieldCode="DE" term="%22Moon%22">Moon</searchLink><br />*<searchLink fieldCode="DE" term="%22Electron+microscopy%22">Electron microscopy</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Nanophase iron metal (npFe0) spherules ranging in size from a few to hundreds of nanometers are a significant component of the regolith of the Moon and other airless bodies affecting the spectrum of electromagnetic wave reflection. Electron microscopy was used to study nanospherules on the surface and within the volume of agglutinate particles from the lunar regolith of Rümker Mons returned to the Earth by the Chang'e-5 mission. The glass hosting the npFe0 spherules was characterized by a noticeable oxygen depletion compared with the surrounding unmelted minerals. The oxygen deficiency of the glass contributed to the formation of npFe0 and the reduction of elements with low affinity for oxygen, in particular, siderophile elements and sulfur. The spherules were enriched in siderophile elements, including Ni and P, and S relative to the host glass. It can be hypothesized that the increased contents of siderophile elements and sulfur are due to the sorption of their reduced species by iron spherules formed in the glass during active mixing of boiling melt produced by a high-speed impact. The feeding glass zone from which these elements were sorbed was estimated to be up to 3–4 radii of the spherules. Thus, npFe0 spherules can act as a kind of repository for siderophile elements and sulfur or as their carrier, when the spherules were ejected into the impact-related vapor cloud. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=192725277 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1134/S0016702925600968 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 163 Subjects: – SubjectFull: Lunar soil Type: general – SubjectFull: Siderophile elements Type: general – SubjectFull: Metal nanoparticles Type: general – SubjectFull: Moon Type: general – SubjectFull: Electron microscopy Type: general Titles: – TitleFull: Chemical Composition of Metallic Iron Spherules in the Chang'e-5 Lunar Soil. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Sorokin, E. M. – PersonEntity: Name: NameFull: Gerasimov, M. V. – PersonEntity: Name: NameFull: Shklover, V. Ya. – PersonEntity: Name: NameFull: Bondarev, A. V. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00167029 Numbering: – Type: volume Value: 64 – Type: issue Value: 3 Titles: – TitleFull: Geochemistry International Type: main |
| ResultId | 1 |
