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Met Name

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Thin Sections

58.2 gram individual.   unclassified

Andy writes:

A new, yet to be classified polymict eucrite breccia (58.2 g) found on the Nullarbor Plain in April this year, during the annual Monash University expedition.

The name is a field ID - the date it was found, and the letter C indicates that it's the 3rd meteorite we found that day. Some days we're lucky and we get down to letter J.

The meteorite is barely magnetic and, having lost almost all of its fusion crust, was hard to spot on the mottled red-brown surface of the Nullarbor. A large metal particle can be seen on the cut face - possibly from a non-HED source. The various light shaded clasts are eucrite fragments, and the dark clasts are impact melt fragments. These breccia features can also be seen in the thin section photograph taken in plane polarised light. Oxygen isotope anaylsis gave unusually negative 'D17O, suggesting significant contamination by CM chondrite.