The two main types of stony meteorites are chondrites and achondrites. Noblesville is ... Achondrite meteorite. Achondrites are a class of stony meteorites, ...
NASA Website
The highly reduced nature of the enstatite meteorites (chondrites and achondrites) differs from that
NASA Technical Reports Server (NTRS)
PETROGRAPHY AND ORIGIN OF THE UNIQUE ACHONDRITE GRA 06128 & 06129: PRELIMINARY. RESULTS. ... GRA 06128 & 06129 are paired achondrites [1], ...
Abstract: Achondrites and mesosiderites containing brecciated structures indicate ... Subject Terms: ACHONDRITE; ACHONDRITES; BRECCIA; EJECTION; FRAGMENTS; ...
The relationship to basaltic achondrite ... Vesta has a composition very similar to that of certain basaltic achondrites. Basaltic achondrites are special ...
Discovered at Reckling Peak, Antarctica, this type of meteorite is known as an achondrite. It has a basaltic composition and was probably formed when an ...
ALHA 76005 is a basaltic achondrite containing few, if any, orthopyroxenes. Its bulk major and trace
ELEMENT ANALYSES OF MESOSIDERITE RKPA 79015 AND UNGROUPED ACHONDRITE QUE ... ( HED) meteorites, the largest group of achondrites, are ...
GRA 06128 and 06129 are paired achondrites with unique mineral proportions (75% oligoclase), mineral
Achondrites are stony meteorites without chondrules or metal. Metal- ... One of the meteorites is an achondrite consisting mostly of two silicate minerals. ...
The primitive achondrites have approximately chondritic bulk chemical composition but achondritic textures. Clayton et al. show that nine of these meteorites, the acapulcoites and the lodranites, have similar oxygen isotopic compositions. The acapulcoites...
National Technical Information Service (NTIS)
Primitive achondrites are meteorites that have mineral and bulk chemical compositions similar to the most primitive meteorites (chondrites) but have textures similar to more evolved meteorites (achondrites). The unique geochemistry and texture of the prim...
Most achondritic meteorites have Fe/Mn ratios that are lower than those of carbonaceous chondrites and of course are lower than the solar system abundance ratio of these elements. Models of the origin of achondritic assemblages must, therefore, account fo...
Uranium was measured by homogwnizwd fission track analysis in 34 samples of 22 achondrites. Potassium was determined in aliquots of eleven of these. The results, combined with previous Al data, were not compatible with achondrite formation from chondritic material by previously suggested fractional melting or metal-sulfide segregation processes. ...
Energy Citations Database
achondrites constitute a series with absolute rare-earth abundances from ... cumulates froa a liquid of normal brecciated achondrite composition. Two ...
Stony. Chondrite. Achondrite. " Iron. " Stony Iron ... Classifying Achondrite Basalts. " Basalts common in inner solar system. " All made mostly of ...
Apr 29, 2011 ... Duke M. B. (1963) Petrology of basaltic achondrites. ... J?rome D. Y. (1970) Composition and origin of some achondrite meteorites. ...
3103 (1982 BB) to the enstatite achondrite meteorites and the Hungaria aster- ... ent asteroid: Evidence from the Norton County enstatite achondrite. ...
regolith-free ordinary chondrite and basaltic achondrite composi- ...... a nearly regolith-free basaltic achondrite composition is consis- ...
to have enstatite achondrite compositions; Bus et al., 2002), in- .... of the enstatite achondrites and no other major meteorite class ...
Apr 29, 2011 ... Some achondrites are basalts and related igneous rocks similar in mineralogy and bulk composition to other achondrites, but much younger ...
(1980) Spectroscopic evidence for two achondrite parent bodies - ... achondrite - Evidence for a dynamo-type magnetising field. Meteoritics 27, 560-567. ...
Primitive achondrites are meteorites that have mineral and bulk chemical compositions similar to the
Achondrites: Meteorites from asteroids that melted ... The asteroid Vesta is thought to have melted and may contain achondrite materials. ...
is a 7 g achondrite. In reviewing requests for allocations .... achondrite with mineral compositions similar to those of Angra dos Reis. (ADOR). ...
