Sulfur-bearing serpentine in carbonaceous chondrites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10511764" target="_blank" >RIV/00216208:11310/25:10511764 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_yI3hGugFZ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_yI3hGugFZ</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/maps.70069" target="_blank" >10.1111/maps.70069</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sulfur-bearing serpentine in carbonaceous chondrites

Popis výsledku v původním jazyce

A correlative multi-technique approach, including electron microscopy and X-ray synchrotron work, has been used to obtain both structural and compositional information of a sulfur-bearing serpentine identified in several carbonaceous chondrites (Winchcombe CM2, Aguas Zarcas CM2, Ivuna CI, and Orgueil CI), and in Ryugu samples returned by the Hayabusa2 mission. S-K edge X-ray absorption spectroscopy was used to determine the oxidation state of sulfur in the serpentine in all samples except Ryugu. The abundance of this phase varies across these samples, with the largest amount in Winchcombe; approx. 12 vol% of phyllosilicates are identified as sulfur-bearing serpentine characterized by approx. 10 wt% SO3 equivalent. HRTEM studies reveal a d(001)-spacing range of 0.64-0.70 nm across all sulfur-bearing serpentine sites, averaging 0.68 nm, characteristic of serpentine. Sulfur-serpentine has variable S(6+)/ΣS(total) values and different sulfur species dependent on specimen type, with CM sulfur-bearing serpentine having values of 0.1-0.2 and S(2-) as the dominant valency, and CIs having values of 0.9-1.0 with S(6+) as the dominant valency. We suggest sulfur is structurally incorporated into serpentine as SH(-) partially replacing OH(-), and trapped as (SO4)(2-) ions, with an approximate mineral formula of (Mg Fe(2+) Fe(3+) Al)(2-3)(Si Al)(2)O(5)(OH)(5-6)(HS(-))(1-2)(SO4)(2-)(0.1-0.7). We conclude that much of the material identified in previous studies of carbonaceous chondrites as TCI-like or PCPs could be sulfur-bearing serpentine. The relatively high abundance of sulfur-bearing serpentine suggests that incorporation of sulfur into this phase was a significant part of the S-cycle in the early Solar System.

Název v anglickém jazyce

Sulfur-bearing serpentine in carbonaceous chondrites

Popis výsledku anglicky

A correlative multi-technique approach, including electron microscopy and X-ray synchrotron work, has been used to obtain both structural and compositional information of a sulfur-bearing serpentine identified in several carbonaceous chondrites (Winchcombe CM2, Aguas Zarcas CM2, Ivuna CI, and Orgueil CI), and in Ryugu samples returned by the Hayabusa2 mission. S-K edge X-ray absorption spectroscopy was used to determine the oxidation state of sulfur in the serpentine in all samples except Ryugu. The abundance of this phase varies across these samples, with the largest amount in Winchcombe; approx. 12 vol% of phyllosilicates are identified as sulfur-bearing serpentine characterized by approx. 10 wt% SO3 equivalent. HRTEM studies reveal a d(001)-spacing range of 0.64-0.70 nm across all sulfur-bearing serpentine sites, averaging 0.68 nm, characteristic of serpentine. Sulfur-serpentine has variable S(6+)/ΣS(total) values and different sulfur species dependent on specimen type, with CM sulfur-bearing serpentine having values of 0.1-0.2 and S(2-) as the dominant valency, and CIs having values of 0.9-1.0 with S(6+) as the dominant valency. We suggest sulfur is structurally incorporated into serpentine as SH(-) partially replacing OH(-), and trapped as (SO4)(2-) ions, with an approximate mineral formula of (Mg Fe(2+) Fe(3+) Al)(2-3)(Si Al)(2)O(5)(OH)(5-6)(HS(-))(1-2)(SO4)(2-)(0.1-0.7). We conclude that much of the material identified in previous studies of carbonaceous chondrites as TCI-like or PCPs could be sulfur-bearing serpentine. The relatively high abundance of sulfur-bearing serpentine suggests that incorporation of sulfur into this phase was a significant part of the S-cycle in the early Solar System.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Meteoritics and Planetary Science

ISSN

1086-9379

e-ISSN

1945-5100

Svazek periodika

60

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

27

Strana od-do

2864-2890

Kód UT WoS článku

001611527200001

EID výsledku v databázi Scopus

2-s2.0-105021325589