| Northwest Africa (NWA) 10828|
NWA 10828 was found in a mixed box of meteorites intended to become slices. But its unusual appearance of chondrules that were eroding out of the ground mass and standing out free of surrounding rock led to it being sent for classification. The single stone of 541 grams had a thick outer layer of fragile material where the ground mass was nearly gone. This outer material became large and small fragments often with the imprint of the choundrules showing as cup depressions. Such replacement of the matrix with calcite is unusual and the distinct large choundrules make for a very interesting H4 meteorite.
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