Premium
H4 and H5 chondrites from the Rub'al Khali Desert
Author(s) -
Krot Alexander N.
Publication year - 1993
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1993.tb00764.x
Subject(s) - chondrite , pyroxene , ordinary chondrite , geology , olivine , parent body , mineralogy , stage (stratigraphy) , geochemistry , texture (cosmology) , meteorite , physics , astrobiology , paleontology , image (mathematics) , artificial intelligence , computer science
Al‐Jimshan is a highly weathered 11.45 kg chondrite that was found in 1955 in the Rub' al Khali Desert, Saudi Arabia (20*42′N, 52*50E) about 240 km south‐east of the town of al‐Hadidah. The main mass is now at UCLA. Based on texture and mineral composition (olivine Fa 17.7 ± 0.4; pyroxene Fs 15.7 ± 1.0 Wo 13 ± 0.4), al‐Jimshan is classified as an H4 chondrite of shock stage S2. The Bir‐Hadi and ad‐Dahbubah H chondrites, which also were found in the Rub'al Khali (Holm, 1962), are probably not paired with al‐Jimshan. They are classified as H5, shock stage S3 (Fa 18.1 ± 0.5, n = 10; Fs 16.0 ± 0.6, Wo 1.1 ± 0.4, n = 9) and H5, shock stage S2 (Fa 17.9 ± 0.3, n = 10; FS 15.5 ± 0.2 Wo 1.0 ± 0.4, n = 10), respectively.