An Achondritic Micrometeorite from Antarctica: Expanding the Solar System Inventory of Basaltic Asteroids
Micrometeorites with sizes below 1 mm are collected in a diversity of environments such as deep-sea sediments and polar caps. Chemical, mineralogical and isotopic studies indicate that micrometeorites are closely related to primitive carbonaceous chondrites that amount to only approximately 2% of me...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20050169518 2023-05-15T13:34:40+02:00 An Achondritic Micrometeorite from Antarctica: Expanding the Solar System Inventory of Basaltic Asteroids Maurette, M. Gounelle, M. Engrand, C. Zolensky, M. E. Chaussidon, M. Unclassified, Unlimited, Publicly available [2005] application/pdf http://hdl.handle.net/2060/20050169518 unknown Document ID: 20050169518 http://hdl.handle.net/2060/20050169518 Copyright, Distribution under U.S. Government purpose rights CASI Lunar and Planetary Science and Exploration Lunar and Planetary Science XXXVI, Part 7; LPI-Contrib-1234-Pt-7 2005 ftnasantrs 2017-10-07T22:47:39Z Micrometeorites with sizes below 1 mm are collected in a diversity of environments such as deep-sea sediments and polar caps. Chemical, mineralogical and isotopic studies indicate that micrometeorites are closely related to primitive carbonaceous chondrites that amount to only approximately 2% of meteorite falls. While thousands of micrometeorites have been studied in detail, no micrometeorite has been found so far with an unambiguous achondritic composition and texture. One melted cosmic spherule has a low Fe/Mn ratio similar to that of eucrites, the most common basaltic meteorite group. Here we report on the texture, mineralogy, Rare Earth Elements (REEs) abundance and oxygen isotopic composition of the unmelted Antarctic micrometeorite 99-21-40 that has an unambiguous basaltic origin. Other/Unknown Material Antarc* Antarctic Antarctica NASA Technical Reports Server (NTRS) Antarctic |
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Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Lunar and Planetary Science and Exploration |
spellingShingle |
Lunar and Planetary Science and Exploration Maurette, M. Gounelle, M. Engrand, C. Zolensky, M. E. Chaussidon, M. An Achondritic Micrometeorite from Antarctica: Expanding the Solar System Inventory of Basaltic Asteroids |
topic_facet |
Lunar and Planetary Science and Exploration |
description |
Micrometeorites with sizes below 1 mm are collected in a diversity of environments such as deep-sea sediments and polar caps. Chemical, mineralogical and isotopic studies indicate that micrometeorites are closely related to primitive carbonaceous chondrites that amount to only approximately 2% of meteorite falls. While thousands of micrometeorites have been studied in detail, no micrometeorite has been found so far with an unambiguous achondritic composition and texture. One melted cosmic spherule has a low Fe/Mn ratio similar to that of eucrites, the most common basaltic meteorite group. Here we report on the texture, mineralogy, Rare Earth Elements (REEs) abundance and oxygen isotopic composition of the unmelted Antarctic micrometeorite 99-21-40 that has an unambiguous basaltic origin. |
format |
Other/Unknown Material |
author |
Maurette, M. Gounelle, M. Engrand, C. Zolensky, M. E. Chaussidon, M. |
author_facet |
Maurette, M. Gounelle, M. Engrand, C. Zolensky, M. E. Chaussidon, M. |
author_sort |
Maurette, M. |
title |
An Achondritic Micrometeorite from Antarctica: Expanding the Solar System Inventory of Basaltic Asteroids |
title_short |
An Achondritic Micrometeorite from Antarctica: Expanding the Solar System Inventory of Basaltic Asteroids |
title_full |
An Achondritic Micrometeorite from Antarctica: Expanding the Solar System Inventory of Basaltic Asteroids |
title_fullStr |
An Achondritic Micrometeorite from Antarctica: Expanding the Solar System Inventory of Basaltic Asteroids |
title_full_unstemmed |
An Achondritic Micrometeorite from Antarctica: Expanding the Solar System Inventory of Basaltic Asteroids |
title_sort |
achondritic micrometeorite from antarctica: expanding the solar system inventory of basaltic asteroids |
publishDate |
2005 |
url |
http://hdl.handle.net/2060/20050169518 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
CASI |
op_relation |
Document ID: 20050169518 http://hdl.handle.net/2060/20050169518 |
op_rights |
Copyright, Distribution under U.S. Government purpose rights |
_version_ |
1766055572493303808 |