Other
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985lpsc...16..149r&link_type=abstract
(Lunar and Planetary Institute, NASA, American Geophysical Union, et al., Lunar and Planetary Science Conference, 16th, Houston,
Other
12
Chondrites, Interplanetary Dust, Silicates, Aggregates, Electron Microscopy, Energy Spectra, Porous Materials, Strata, Cosmic Dust, Interplanetary Dust, Silicates, Chondritic Material, Porosity, Particles, Electron Microscopy, Aem, Composition, Analysis, Chemsitry, Classification, Crystallography, Smectite, Kaolinite, Thermal Effects, Aggregates, Heating, Temperature, Comparisons, Formation, Alteration
Scientific paper
Analytical electron microscopy on individual grains from a portion of a chondritic porous interplanetary dust particle (aggregate W7029C1 from the NASA Johnson Space Center Cosmic Dust Collection) shows that layer silicates compose 50 percent of the silicate fraction examined. These layer silicates can be classified into two distinct crystallochemical groups: (1) fine-grained, polycrystalline smectite minerals; and (2) well-ordered, single crystals of kaolinite and Mg-poor talc. The layer silicates in this portion of sample W7029(asterisk)A are dissimilar to those described in other chondritic porous aggregates. The predominant layer silicate assemblage in W7029(asterisk)A indicates that heating of the aggregate during atmospheric entry was brief and probably to a temperature less than 300 C. Comparison with terrestrial phyllosilicate occurrences suggests that some layer silicates in aggregate W7029(asterisk)A may have been formed by alteratiton from preexisting silicate minerals at low temperatures (less than 25 C) after aggregate formation.
MacKinnon Ian D. R.
Rietmeijer Frans J. M.
No associations
LandOfFree
Layer silicates in a chondritic porous interplanetary dust particle does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Layer silicates in a chondritic porous interplanetary dust particle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Layer silicates in a chondritic porous interplanetary dust particle will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-978956