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LITHIC CLASTS IN THE SUPUHEE CHONDRITE
Author(s) -
Leitch Catherine A.,
Grossman Lawrence
Publication year - 1977
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1977.tb00337.x
Subject(s) - chondrite , clastic rock , geology , geochemistry , enstatite , meteorite , ordinary chondrite , mineralogy , astrobiology , sedimentary rock , physics
Supuhee is a shocked and brecciated H6 chondrite containing foreign lithic clasts. Three such clasts were analysed with the electron microprobe in an attempt to locate “mysterite,” a volatile‐rich material postulated to be present in Supuhee. Clast 1 bears chemical and mineralogical similarities to C1 and C2 chondrites, but its total volatile content, <9.4%, is lower than that of either of these types. The composition of Clast 2 suggests its derivation from H‐group chondrite material via loss of metal and sulfide. The third clast is apparently a unique meteorite type bearing compositional similarities to both ordinary and enstatite chondrites. The occurrence of these clasts in a highly recrystallized host is evidence for their incorporation after metamorphism. The presence of Clast 1, coupled with this time sequence, indicates that conditions were favorable for the formation, incorporation and preservation of volatile‐rich materials such as mysterite