 | Bischoff, A., Palme, H., Schultz, L., Weber, D., Weber, H.W., Spettel, B. (1993) Acfer 182 and paired samples, an iron-rich carbonaceous chondrite: Similarities with ALH85085 and relationship to CR chondrites. Geochimica et Cosmochimica Acta, 57 (11) 2631-2648 doi:10.1016/0016-7037(93)90422-s | Journal (article/letter/editorial) | | Printed I” U.S.A. 0016-7037/93/.%&O t .oO Acfer 182 and paired samples, an iron-rich carbonaceous...accepted in revised,form November 9, 1992 ) samples of a new, Fe-rich chond~te were found in the Sahara...Sahara in 1990 and 199 1 ( Acfer 182, Acfer 207, Acfer 214). The samples are paired and the meteorite will...will be designated as Acfer 182. The chondrite is chemically, texturally, and mineralogically similar to...to the Allan Hills meteorite ALH85085. One important difference between the two meteorites is the smaller |  | | Report (issue) | | As lathlike or subhedral rounded grains, to 30 µ; in polycrystalline aggregates rimmed by melilite. Physical...446(4) β = 107.0(1)◦ X-ray Powder Pattern: Acfer 182 meteorite. 3.515 (100), 4.460 (43), 2.605 (36), 2.440...(2) 78.43 21.57 Total 99.83 100.00 (1) Acfer 182 meteorite; by electron microprobe, average of 20 grains;...01 )Σ=1.01 Al3.99 O7 . (2) CaAl4 O7 . Occurrence: In argillaceous limestones metamorphosed at high temperature...temperature and low pressure (Hatrurim Formation, Israel); in Ca–Al-rich inclusions thought formed by condensation |  | | Journal (article/letter/editorial) | | 479-607 (1995) © Meteoritical Society. 1995. Printed in USA. Abstracts RIMS, MATRIX, AND THE BULK COMPOSITIONS...interchondrule matrix are among the most primitive materials in chondrites. Indeed, they are known to contain presolar...However, most of the components in rims and matrix are solar system in origin and may include nebular...glass in the matrix could explain the general AI enrichment of matrix in many UOCs [4J, but in other...contain significant amounts of equilibrium condensates. In the UOCs and C03s, the rims and matrix appear to |
|
