A preliminary report on the achondrite meteorites in the 1979 U. S. Antarctic meteorite collection
Abstract
Seventy-three meteorite samples were collected in Antarctica during the austral summer of 1979-80. A description is presented of the seven achondrites found among the meteorite samples. The achondrites described include an ALHA79017-polymict eucrite, an EETA79001-shergottite, an EETA79002-diogenite, an EETA79004-eucrite, an EETA79005-polymict eucrite, an EETA79006-howardite, and an EETA79011-polymict eucrite. The most exciting single aspect of the 1979 collection is undoubtedly the discovery of a new member of the shergottite group of meteorites. Sample EETA79001 is just under 8 kg and should thus provide ample material for detailed studies. In addition to the achondrites, a unique iron meteorite with abundant silicate (orthopyroxene) inclusions and a large diogenite is also discussed.
- Publication:
-
National Institute Polar Research Memoirs
- Pub Date:
- December 1981
- Bibcode:
- 1981PolRe..20...33R
- Keywords:
-
- Achondrites;
- Antarctic Regions;
- Meteoritic Composition;
- Breccia;
- Feldspars;
- Lithology;
- Meteoritic Microstructures;
- Pyroxenes;
- ANTARCTIC METEORITES;
- ACHONDRITES;
- DATA;
- SAMPLES;
- METEORITE;
- EUCRITES;
- POLYMICTS;
- HOWARDITES;
- SHERGOTTITES;
- DIOGENITES;
- IRON METEORITES;
- SILICATES;
- ORTHOPYROXENES;
- INCLUSIONS;
- LITHOLOGY;
- TEXTURE;
- GRAINS;
- MINERALOGY;
- ZONING;
- PYROXENES;
- MAGNESIUM;
- CALCUIM;
- PLAGIOCLASE;
- MASKELYNITE;
- BLACK GLASS;
- COMPOSITION;
- ALLAN HILLS METEORITES;
- RECKLING PEAK METEORITES;
- ELEPHANT MORAINE METEORITES;
- ALHA79017;
- PHOTOMICROGRAPHS;
- EETA79001;
- EETA79002;
- EETA79005;
- EETA79011;
- EETA79004;
- EETA79006;
- RKPA79015;
- FEATURES;
- Lunar and Planetary Exploration; Meteorites