Olivine in Antarctic micrometeorites - Comparison with other extraterrestrial olivine
The compositions of 5-micron or larger Mg-rich olivines from 26 Antarctic micrometeorite particles were examined and compared with those of other extraterrestrial olivine. The following differences were noted between the Antarctic meteorites and the generally recognized meteorite groups: (1) while r...
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1992
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ftnasantrs:oai:casi.ntrs.nasa.gov:19920065557 2023-05-15T14:03:21+02:00 Olivine in Antarctic micrometeorites - Comparison with other extraterrestrial olivine Steele, Ian M. Unclassified, Unlimited, Publicly available Jul 1, 1992 http://ntrs.nasa.gov/search.jsp?R=19920065557 unknown http://ntrs.nasa.gov/search.jsp?R=19920065557 Accession ID: 92A48181 Copyright Other Sources 91 Geochimica et Cosmochimica Acta; 56; 7, Ju 1992 ftnasantrs 2012-02-15T19:37:22Z The compositions of 5-micron or larger Mg-rich olivines from 26 Antarctic micrometeorite particles were examined and compared with those of other extraterrestrial olivine. The following differences were noted between the Antarctic meteorites and the generally recognized meteorite groups: (1) while refractory-rich (e.g., high Al2O3 or CaO) are common in C2, C3, and UOC meteorites, there are only rare, or possibly no refractory-rich olivines in Antarctic micrometeorites; (2) Mg-rich olivine compositions with FeO less than 1.9 wt pct are underrepresented in the Antarctic micrometeorites, relative to other unequilibrated meteorites; and (3) no Mn-rich, high-Mg olivines were found similar to those described in interplanetary dust, C1, C2, C3, and UOC meteorites. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic The Antarctic |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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unknown |
topic |
91 |
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91 Steele, Ian M. Olivine in Antarctic micrometeorites - Comparison with other extraterrestrial olivine |
topic_facet |
91 |
description |
The compositions of 5-micron or larger Mg-rich olivines from 26 Antarctic micrometeorite particles were examined and compared with those of other extraterrestrial olivine. The following differences were noted between the Antarctic meteorites and the generally recognized meteorite groups: (1) while refractory-rich (e.g., high Al2O3 or CaO) are common in C2, C3, and UOC meteorites, there are only rare, or possibly no refractory-rich olivines in Antarctic micrometeorites; (2) Mg-rich olivine compositions with FeO less than 1.9 wt pct are underrepresented in the Antarctic micrometeorites, relative to other unequilibrated meteorites; and (3) no Mn-rich, high-Mg olivines were found similar to those described in interplanetary dust, C1, C2, C3, and UOC meteorites. |
format |
Other/Unknown Material |
author |
Steele, Ian M. |
author_facet |
Steele, Ian M. |
author_sort |
Steele, Ian M. |
title |
Olivine in Antarctic micrometeorites - Comparison with other extraterrestrial olivine |
title_short |
Olivine in Antarctic micrometeorites - Comparison with other extraterrestrial olivine |
title_full |
Olivine in Antarctic micrometeorites - Comparison with other extraterrestrial olivine |
title_fullStr |
Olivine in Antarctic micrometeorites - Comparison with other extraterrestrial olivine |
title_full_unstemmed |
Olivine in Antarctic micrometeorites - Comparison with other extraterrestrial olivine |
title_sort |
olivine in antarctic micrometeorites - comparison with other extraterrestrial olivine |
publishDate |
1992 |
url |
http://ntrs.nasa.gov/search.jsp?R=19920065557 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19920065557 Accession ID: 92A48181 |
op_rights |
Copyright |
_version_ |
1766273983556091904 |