A GIGAmacro view of the front and back of an anorthosite cobble

Here are two views of a single anorthosite cobble, collected in the Adirondack Mountains of upstate New York:

Raw, natural surface:
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Slabbed and polished surface:
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As you zoom in and explore these GIGAmacro images, see if you can find the delicate little “necklaces” (reaction rims) of garnet wrapping around the few isolated pyroxenes!

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