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More model informationNWA 1685 was found in North West Africa (NWA) and it is an ordinary chondrite (LL4). While this specimen is fusion crusted, broken and cut surfaces of other stones often show a breccia with angular igneous clasts set in a chondritic matrix. NWA 1685 is classified as a polymict breccia, consisting of an LL chondrite matrix and metal-poor igneous clasts, which have experienced variable to significant shock. The similar olivine and pyroxene mineral compositions between the igneous clasts and the host LL chondrite suggest that the clasts are a melt product derived from the LL chondrite host. Source: Meteoritical Bulletin.
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