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THE TIMMERSOI †, NIGER, HYPERSTHENE CHONDRITE
Author(s) -
Smith D. G. W.,
Bell J. D.,
Frisch T.
Publication year - 1972
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1972.tb00418.x
Subject(s) - troilite , whitlockite , chondrite , kamacite , meteorite , olivine , geology , geochemistry , chondrule , limonite , achondrite , allende meteorite , mineralogy , astrobiology , apatite , physics , hematite
The Timmersoi meteorite, a new type L5 hypersthene chondrite from the Niger Republic is described and microprobe analyses of its olivine, orthopyroxene, clinopyroxene, plagioclase, kamacite, taenite, troilite, chromite, whitlockite, chlorapatite and limonite presented. Veins and patches of black “glassy” material are regarded as products of shock melting. In places this material contains immiscible droplets of troilite each with one or more well‐formed crystals of taenite. Calculations indicate equilibrium between olivine and orthopyroxene with a temperature of equilibration of about 850 °C.