Serpentine nanotubes in the Mighei CM chondrite

Thomas Zega, Laurence A J Garvie, István Dódony, Peter R. Buseck

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We report the discovery of serpentine nanotubes in the Mighei CM chondrite. High-resolution transmission electron microscope (HRTEM) images show that the nanotubes are multiwalled, containing from 3 to 11 layers with periodicities of 0.68±0.08 nm. Some nanotubes appear capped. Their lengths and inner diameters range from 20 to 230 nm and 2 to 9 nm, respectively, with internal volumes of 200-11,300 nm3. Chemical analyses made using electron energy-loss spectroscopy (EELS) give Mg1.7Fe 0.52+Fe0.73+[Si1.5 Fe0.53+O5]H1.8([ ]1.0O2.4S0.6)∑=4, with H determined by difference. The S-bearing and Fe-rich composition of these nanotubes is distinct from previously reported meteoritic and terrestrial materials, and we believe them to be a new variety of serpentine. These intriguing structures likely formed during aqueous-alteration events early in the history of the solar system and potentially served as containers of primordial fluids.

Original languageEnglish (US)
Pages (from-to)141-146
Number of pages6
JournalEarth and Planetary Science Letters
Volume223
Issue number1-2
DOIs
StatePublished - Jun 30 2004
Externally publishedYes

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chondrites
chondrite
Nanotubes
nanotubes
Bearings (structural)
electron
Solar system
Electron energy loss spectroscopy
containers
solar system
periodicity
Containers
periodic variations
Electron microscopes
electron microscopes
energy dissipation
spectroscopy
histories
electron energy
Fluids

Keywords

  • Aqueous alteration
  • CM chondrites
  • EELS
  • Fine-grained rims
  • Matrix
  • Nanotubes
  • Serpentine
  • TEM

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Serpentine nanotubes in the Mighei CM chondrite. / Zega, Thomas; Garvie, Laurence A J; Dódony, István; Buseck, Peter R.

In: Earth and Planetary Science Letters, Vol. 223, No. 1-2, 30.06.2004, p. 141-146.

Research output: Contribution to journalArticle

Zega, Thomas ; Garvie, Laurence A J ; Dódony, István ; Buseck, Peter R. / Serpentine nanotubes in the Mighei CM chondrite. In: Earth and Planetary Science Letters. 2004 ; Vol. 223, No. 1-2. pp. 141-146.
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