Mineralogy, petrology, geochemistry, and chronology of the Murrili (H5) meteorite fall: The third recovered fall from the Desert Fireball Network

Murrili, the third meteorite recovered by Desert Fireball Network, is analyzed using mineralogy, oxygen isotopes, bulk chemistry, physical properties, noble gases, and cosmogenic radionuclides. The modal magnetic susceptibility, isotopes of Murrili point to it being an H5 ordinary chondrite. It heterogeneously shocked (S2–S5), depending on method used determine it, although not obviously brecciated in texture. Cosmogenic radionuclides yield a cosmic ray exposure age 6–8 Ma, pre-atmospheric meteoroid size 15–20 cm radius. Murrili’s fall subsequent month-long embedment into salt lake Kati Thanda significantly altered whole rock, evident its Mössbauer spectra, visual inspection cut sections. may have experienced minor, but subsequent, impacts after formation 4475.3 ± 2.3 which left shocked.