Advanced

Impact related changes in mineral properties: Ti-magnetite from basaltic rocks at Lonar crater, India

Koch, C. B. and Ferrow, Embaie LU (2005) In Hyperfine Interactions 166(1-4). p.505-509
Abstract
Samples from vesicular Lonar impactite have been investigated by Mossbauer spectroscopy and SEM in combination with elemental analysis. Observation reveal the new-formation of oxide minerals have occurred with nucleation in particular at the walls of the vesicles interpreted as having formed from condensation of the gas phase having caused the vesicles to form in the first place. Elemental analysis of Ti-magnetites gives very similar compositions irrespective of the oxides grains being vesicle or matrix associated (Fe/Ti ratios approximately 3). The room temperature spectra of the oxides show magnetically ordered components due to A, B, and C sites in the substituted spinel. The occurrence of these ordered components are not in accordance... (More)
Samples from vesicular Lonar impactite have been investigated by Mossbauer spectroscopy and SEM in combination with elemental analysis. Observation reveal the new-formation of oxide minerals have occurred with nucleation in particular at the walls of the vesicles interpreted as having formed from condensation of the gas phase having caused the vesicles to form in the first place. Elemental analysis of Ti-magnetites gives very similar compositions irrespective of the oxides grains being vesicle or matrix associated (Fe/Ti ratios approximately 3). The room temperature spectra of the oxides show magnetically ordered components due to A, B, and C sites in the substituted spinel. The occurrence of these ordered components are not in accordance with expectations from the bulk chemical compositions, suggesting the presence of fine scaled intergrowth of Ti-oxide and Ti-magnetite. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Lonar crater, vesicles, gas condensation growth, Ti-magnetite, impactite, LAKE
in
Hyperfine Interactions
volume
166
issue
1-4
pages
505 - 509
publisher
Springer
external identifiers
  • wos:000242969500027
  • scopus:33845735498
ISSN
1572-9540
DOI
10.1007/s10751-006-9317-2
language
English
LU publication?
yes
id
6fbbc8dd-6756-46ba-b417-ea08396de34f (old id 1417151)
date added to LUP
2009-06-12 12:55:12
date last changed
2017-01-01 05:11:23
@article{6fbbc8dd-6756-46ba-b417-ea08396de34f,
  abstract     = {Samples from vesicular Lonar impactite have been investigated by Mossbauer spectroscopy and SEM in combination with elemental analysis. Observation reveal the new-formation of oxide minerals have occurred with nucleation in particular at the walls of the vesicles interpreted as having formed from condensation of the gas phase having caused the vesicles to form in the first place. Elemental analysis of Ti-magnetites gives very similar compositions irrespective of the oxides grains being vesicle or matrix associated (Fe/Ti ratios approximately 3). The room temperature spectra of the oxides show magnetically ordered components due to A, B, and C sites in the substituted spinel. The occurrence of these ordered components are not in accordance with expectations from the bulk chemical compositions, suggesting the presence of fine scaled intergrowth of Ti-oxide and Ti-magnetite.},
  author       = {Koch, C. B. and Ferrow, Embaie},
  issn         = {1572-9540},
  keyword      = {Lonar crater,vesicles,gas condensation growth,Ti-magnetite,impactite,LAKE},
  language     = {eng},
  number       = {1-4},
  pages        = {505--509},
  publisher    = {Springer},
  series       = {Hyperfine Interactions},
  title        = {Impact related changes in mineral properties: Ti-magnetite from basaltic rocks at Lonar crater, India},
  url          = {http://dx.doi.org/10.1007/s10751-006-9317-2},
  volume       = {166},
  year         = {2005},
}