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More than 100 kg iron meteorite NWA 5549 has been found in 2008 in desert of Algeria.
All samples are individuals and have good safety. Tens samples of various weight are currently collected.
In the future new finds are possible.
Silicate-bearing iron meteorites are very rare, unusual and complicated. Mineralogical-chemical
characteristics of these meteorites represent a great interest for understanding of history of their
parent bodies and of their possible nebular precursors. These silicate inclusions are roughly chondritic
in mineralogical and chemical compositions, but their recrystallized textures are achondritic. Silicate
inclusions in IAB irons are linked through oxygen isotopes and mineral compositions to the achondrites -
winonaites and may be related to IIICD irons. The apparent contradictory peculiarities of these
meteorites have led to several models of their formations: impact melting, fractional crystallization of
molten cores of small planetesimals, catastrophical disruption and reassemble of partially-melted parent
bodies and their formation from primary material of early solar nebular under different chemical and
physical conditions.
Owing to the unusual structure the meteorite is very difficult for processing, but the polished
and etched surface allows to see amazing beauty structure. Certainly, samples of this meteorite will
find the worthy place in any collection. [eBay] |
