The Dhofar 008 (Dho
meteorite was discovered in the Dhofar region of Oman on
December 4th, 1999. Three stones with dark brownish-black fusion
crust and a Total Known Weight of 2200g were found. Dhofar 008
is a highly unequilibrated primitive chondrite with a very
heterogenous nature. This made classification somewhat difficult
as the olivine and pyroxene compositions belong to the
H-Chondrites while the oxygen isotopic compositions were also far
from the range usually found in L-Chondrites.
However, the bulk chemical composition and thermoluminescence
results put Dhofar 008 in the L-Chondrite group. The average
chondrule diameter of Dhofar 008 is 600μm which is in the low
range for the L-Chondrite group. The uncertainties in
classification are likely due to this meteorite's primitive,
heterogenous nature and it has also been theorised that it may
contain material from several different reservoirs.
While Dhofar 008 was
initially classified as an intermediate/transitional H/L3.2/3.3, this was later refined
and the classification now officially stands at L3.3 with a
Shock Rating of S3 and a Weathering Level of W2. The specimens below
are part of the Meteorites Australia Collection
(MA.04.0016) & (MA.07.0006).
Geochemical and Thermoluminescence studies of Dhofar 008, L3.2/3.3 Chondrite.
M.A. Ivanova, N.N. Kononkova, L.D. Barsukova, V. A. Ivliev, S. Afanasiev, R. N. Clayton, T. N. Maeyda, M. A. Nazarov, (12KB)