Transmission electron microscopy of the "LOW-CA" hydrated interplanetary dust particle

Kazushige Tomeoka, P R Buseck

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Transmission electron microscopy of a hydrated interplanetary dust particle indicates that it consists largely of a poorly crystalline phyllosilicate containing Fe, Mg and Al with an interlayer spacing of 10 to 12 Å and so is distinct from the major phyllosilicate in CI and CM carbonaceous chondrites. The silicate is probably an Fe- and Mg-rich smectite or mica. Submicron, spherical to euhedral pyrrhotite and pentlandite are prominent. Unusual, low-Ni ( < 3 at.% Ni) pentlandite is also common and typically occurs as rectangular platelets. Unlike many chondritic interplanetary dust particles, olivine is rare and pyroxene was not observed. Other less abundant phases are magnetite, chromite, and an unidentified phase containing Fe, Mg, Si, Ca, and Mn. This particle differs from a hydrated micrometeorite described previously by Brownlee [1], indicating there are mineralogically different subsets of hydrated interplanetary dust particles. Despite gross similarities in mineralogy between the particle and the carbonaceous chondrites, they show appreciable differences in detail.

Original languageEnglish (US)
Pages (from-to)243-254
Number of pages12
JournalEarth and Planetary Science Letters
Volume69
Issue number2
DOIs
StatePublished - 1984

Fingerprint

interplanetary dust
Particles (particulate matter)
Dust
transmission electron microscopy
Transmission electron microscopy
carbonaceous chondrites
pentlandite
Ferrosoferric Oxide
carbonaceous chondrite
phyllosilicate
Silicates
Chromite
Mineralogy
Platelets
micrometeorites
micrometeorite
chromites
pyrrhotite
Crystalline materials
mineralogy

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Transmission electron microscopy of the "LOW-CA" hydrated interplanetary dust particle. / Tomeoka, Kazushige; Buseck, P R.

In: Earth and Planetary Science Letters, Vol. 69, No. 2, 1984, p. 243-254.

Research output: Contribution to journalArticle

@article{9780352bcb964f63867ee2a4da5f35b7,
title = "Transmission electron microscopy of the {"}LOW-CA{"} hydrated interplanetary dust particle",
abstract = "Transmission electron microscopy of a hydrated interplanetary dust particle indicates that it consists largely of a poorly crystalline phyllosilicate containing Fe, Mg and Al with an interlayer spacing of 10 to 12 {\AA} and so is distinct from the major phyllosilicate in CI and CM carbonaceous chondrites. The silicate is probably an Fe- and Mg-rich smectite or mica. Submicron, spherical to euhedral pyrrhotite and pentlandite are prominent. Unusual, low-Ni ( < 3 at.{\%} Ni) pentlandite is also common and typically occurs as rectangular platelets. Unlike many chondritic interplanetary dust particles, olivine is rare and pyroxene was not observed. Other less abundant phases are magnetite, chromite, and an unidentified phase containing Fe, Mg, Si, Ca, and Mn. This particle differs from a hydrated micrometeorite described previously by Brownlee [1], indicating there are mineralogically different subsets of hydrated interplanetary dust particles. Despite gross similarities in mineralogy between the particle and the carbonaceous chondrites, they show appreciable differences in detail.",
author = "Kazushige Tomeoka and Buseck, {P R}",
year = "1984",
doi = "10.1016/0012-821X(84)90184-5",
language = "English (US)",
volume = "69",
pages = "243--254",
journal = "Earth and Planetary Sciences Letters",
issn = "0012-821X",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Transmission electron microscopy of the "LOW-CA" hydrated interplanetary dust particle

AU - Tomeoka, Kazushige

AU - Buseck, P R

PY - 1984

Y1 - 1984

N2 - Transmission electron microscopy of a hydrated interplanetary dust particle indicates that it consists largely of a poorly crystalline phyllosilicate containing Fe, Mg and Al with an interlayer spacing of 10 to 12 Å and so is distinct from the major phyllosilicate in CI and CM carbonaceous chondrites. The silicate is probably an Fe- and Mg-rich smectite or mica. Submicron, spherical to euhedral pyrrhotite and pentlandite are prominent. Unusual, low-Ni ( < 3 at.% Ni) pentlandite is also common and typically occurs as rectangular platelets. Unlike many chondritic interplanetary dust particles, olivine is rare and pyroxene was not observed. Other less abundant phases are magnetite, chromite, and an unidentified phase containing Fe, Mg, Si, Ca, and Mn. This particle differs from a hydrated micrometeorite described previously by Brownlee [1], indicating there are mineralogically different subsets of hydrated interplanetary dust particles. Despite gross similarities in mineralogy between the particle and the carbonaceous chondrites, they show appreciable differences in detail.

AB - Transmission electron microscopy of a hydrated interplanetary dust particle indicates that it consists largely of a poorly crystalline phyllosilicate containing Fe, Mg and Al with an interlayer spacing of 10 to 12 Å and so is distinct from the major phyllosilicate in CI and CM carbonaceous chondrites. The silicate is probably an Fe- and Mg-rich smectite or mica. Submicron, spherical to euhedral pyrrhotite and pentlandite are prominent. Unusual, low-Ni ( < 3 at.% Ni) pentlandite is also common and typically occurs as rectangular platelets. Unlike many chondritic interplanetary dust particles, olivine is rare and pyroxene was not observed. Other less abundant phases are magnetite, chromite, and an unidentified phase containing Fe, Mg, Si, Ca, and Mn. This particle differs from a hydrated micrometeorite described previously by Brownlee [1], indicating there are mineralogically different subsets of hydrated interplanetary dust particles. Despite gross similarities in mineralogy between the particle and the carbonaceous chondrites, they show appreciable differences in detail.

UR - http://www.scopus.com/inward/record.url?scp=0021334980&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0021334980&partnerID=8YFLogxK

U2 - 10.1016/0012-821X(84)90184-5

DO - 10.1016/0012-821X(84)90184-5

M3 - Article

VL - 69

SP - 243

EP - 254

JO - Earth and Planetary Sciences Letters

JF - Earth and Planetary Sciences Letters

SN - 0012-821X

IS - 2

ER -