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CAMEL DONGA METEORITE, A NEW EUCRITE FROM THE NULLARBOR PLAIN, WESTERN AUSTRALIA
Author(s) -
Cleverly W.H.,
Jarosewich Eugene,
Mason Brian
Publication year - 1986
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1986.tb00870.x
Subject(s) - plagioclase , pyroxene , troilite , geology , geochemistry , ilmenite , meteorite , mineralogy , olivine , chondrite , paleontology , astrobiology , physics , quartz
Twelve stones, ranging up to 504 g (total weight 2.92 kg), of a very fresh eucrite have been collected from a 1 km 2 area on the Nullarbor Plain in Western Australia. The location is approximately 75 km N6°E from Nurina Siding on the Trans‐Australian Railway; coordinates 30°19′S, 126°37′E. This eucrite consists almost entirely of pyroxene (mean composition Wo 16 Fs 49) and plagioclase (mean composition An 85) in approximate proportions 3: 2, with 2% almost pure Fe metal and accessory amounts of troilite, ilmenite, and an SiO 2 phase. Gabbroic and doleritic clasts are present in a groundmass of comminuted pyroxene and plagioclase. The chemical composition (weight per cent) is: SiO 2 49.53, TiO 2 0.74, Al 2 O 3 12.49, Cr 2 O 3 0.33, FeO 16.07, MnO 0.56, MgO 6.31, CaO 10.41, Na 2 O 0.49, K 2 O 0.04, P 2 O 5 < 0.01, H 2 O + < 0.1, H 2 O — 0.07, Fe metal 2.07, Ni < 0.01, Co < 0.01, FeS 0.19, C 0.03, sum 99.33.