Beckettite, Ca 2 V 6 Al 6 O 20 , a new mineral in a Type A refractory inclusion from Allende and clues to processes in the early solar system

Laboratory and in-situ analysis of comet dust

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100102122 ◽

1988 ◽

Vol 46 ◽

pp. 8-9

Author(s):

D.E. Brownlee ◽

A.L. Albee

Keyword(s):

Electron Microscopy ◽

Solar System ◽

Laboratory Study ◽

Isotopic Analysis ◽

Building Blocks ◽

Sem Analysis ◽

Early Solar System ◽

Cometary Material ◽

Comet Dust

Comets are primitive, kilometer-sized bodies that formed in the outer regions of the solar system. Composed of ice and dust, comets are generally believed to be relic building blocks of the outer solar system that have been preserved at cryogenic temperatures since the formation of the Sun and planets. The analysis of cometary material is particularly important because the properties of cometary material provide direct information on the processes and environments that formed and influenced solid matter both in the early solar system and in the interstellar environments that preceded it.The first direct analyses of proven comet dust were made during the Soviet and European spacecraft encounters with Comet Halley in 1986. These missions carried time-of-flight mass spectrometers that measured mass spectra of individual micron and smaller particles. The Halley measurements were semi-quantitative but they showed that comet dust is a complex fine-grained mixture of silicates and organic material. A full understanding of comet dust will require detailed morphological, mineralogical, elemental and isotopic analysis at the finest possible scale. Electron microscopy and related microbeam techniques will play key roles in the analysis. The present and future of electron microscopy of comet samples involves laboratory study of micrometeorites collected in the stratosphere, in-situ SEM analysis of particles collected at a comet and laboratory study of samples collected from a comet and returned to the Earth for detailed study.

Preface: Evolution of the early solar system: Presolar cosmochemical fingerprints and the formation of watery rocky planets

GEOCHEMICAL JOURNAL ◽

10.2343/geochemj.2.0416 ◽

2016 ◽

Vol 50 (1) ◽

pp. 1-2 ◽

Cited By ~ 1

Author(s):

Tomohiro Usui ◽

Audrey Bouvier ◽

Justin I. Simon ◽

Noriko Kita

Keyword(s):

Solar System ◽

Early Solar System ◽

Rocky Planets

A nearby neutron-star merger explains the actinide abundances in the early Solar System

Nature ◽

10.1038/s41586-019-1113-7 ◽

2019 ◽

Vol 569 (7754) ◽

pp. 85-88 ◽

Cited By ~ 11

Author(s):

Imre Bartos ◽

Szabolcs Marka

Keyword(s):

Neutron Star ◽

Solar System ◽

Early Solar System

OSIRIS-REx at Bennu: Overcoming challenges to collect a sample of the early Solar System

Sample Return Missions ◽

10.1016/b978-0-12-818330-4.00008-2 ◽

2021 ◽

pp. 163-194

Author(s):

Dante S. Lauretta ◽

Heather L. Enos ◽

Anjani T. Polit ◽

Heather L. Roper ◽

Catherine W.V. Wolner

Keyword(s):

Solar System ◽

Early Solar System

Exchange Frequency of Oxygen Isotope Reservoirs in The Early Solar System

10.1063/1.2943604 ◽

2008 ◽

Cited By ~ 1

Author(s):

S. Itoh ◽

H. Yurimoto ◽

Takuma Suda ◽

Takaya Nozawa ◽

Akira Ohnishi ◽

...

Keyword(s):

Solar System ◽

Oxygen Isotope ◽

Early Solar System ◽

Exchange Frequency

Diffusive fractionation of carbon isotopes in γ-Fe: Experiment, models and implications for early solar system processes

Geochimica et Cosmochimica Acta ◽

10.1016/j.gca.2013.11.014 ◽

2014 ◽

Vol 127 ◽

pp. 57-66 ◽

Cited By ~ 10

Author(s):

Thomas Mueller ◽

E. Bruce Watson ◽

Dustin Trail ◽

Michael Wiedenbeck ◽

James Van Orman ◽

...

Keyword(s):

Solar System ◽

Carbon Isotopes ◽

Early Solar System

Matrix effects on the relative sensitivity factors for manganese and chromium during ion microprobe analysis of carbonate: Implications for early Solar System chronology

Geochimica et Cosmochimica Acta ◽

10.1016/j.gca.2016.10.046 ◽

2017 ◽

Vol 201 ◽

pp. 245-259 ◽

Cited By ~ 6

Author(s):

Robert C.J. Steele ◽

Veronika S. Heber ◽

Kevin D. McKeegan

Keyword(s):

Solar System ◽

Microprobe Analysis ◽

Matrix Effects ◽

Relative Sensitivity ◽

Ion Microprobe ◽

Early Solar System ◽

Sensitivity Factors

Early solar system chronometry and the 26Al–26Mg clock

Geochimica et Cosmochimica Acta ◽

10.1016/j.gca.2006.06.167 ◽

2006 ◽

Vol 70 (18) ◽

pp. A29

Author(s):

J.A. Baker ◽

M. Bizzarro

Keyword(s):

Solar System ◽

Early Solar System

Short-lived nuclei in the early Solar System: Possible AGB sources

Nuclear Physics A ◽

10.1016/j.nuclphysa.2005.07.015 ◽

2006 ◽

Vol 777 ◽

pp. 5-69 ◽

Cited By ~ 174

Author(s):

G.J. Wasserburg ◽

M. Busso ◽

R. Gallino ◽

K.M. Nollett

Keyword(s):

Solar System ◽

Early Solar System

Synthesis of 13C-enriched amino acids with 13C-depleted insoluble organic matter in a formose-type reaction in the early solar system

Science Advances ◽

10.1126/sciadv.abd3575 ◽

2021 ◽

Vol 7 (18) ◽

pp. eabd3575

Author(s):

Yoshihiro Furukawa ◽

Yoshinari Iwasa ◽

Yoshito Chikaraishi

Keyword(s):

Aqueous Solution ◽

Organic Matter ◽

Solar System ◽

Acid Synthesis ◽

Soluble Organic Matter ◽

Early Solar System ◽

Cold Region ◽

Amino Acid Synthesis ◽

Type Reaction ◽

Insoluble Organic Matter

Solvent-soluble organic matter (SOM) in meteorites, which includes life’s building molecules, is suspected to originate from the cold region of the early solar system, on the basis of 13C enrichment in the molecules. Here, we demonstrate that the isotopic characteristics are reproducible in amino acid synthesis associated with a formose-type reaction in a heated aqueous solution. Both thermochemically driven formose-type reaction and photochemically driven formose-type reaction likely occurred in asteroids and ice-dust grains in the early solar system. Thus, the present results suggest that the formation of 13C-enriched SOM was not specific to the cold outer protosolar disk or the molecular cloud but occurred more widely in the early solar system.