It fell off its little dais in mid-shoot, apparently.
Silurian-aged sandstone from the Bloomsburg Formation collected in Little Fort Valley, VA.
Migmatite from Orange Springs Farm, near Unionville, Virginia. Partial melting of this schist occurred during the late Ordovician Taconian Orogeny (~460 Ma). Sample courtesy T. Keller Grayson.
Sand from Perissa Beach, Santorini, Greece.
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