Quartzite formerly sandstone, probably a shallow ocean sand deposit from
before the continents collided about 400 million years ago.
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Pegmatite sample At the final stages of cooling of a magma chamber, the atoms that didn't fit into previous minerals, will be concentrated. In this group of samples, look for long black crystals of tourmaline.
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Columnar basalt
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Glacial Potholes at Salmon Falls - glacial meltwater eroded potholes in the bed of the Deerfield River.
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