Beach Rocks
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Agate
Agate is a form of microcrystalline quartz, very hard and usually banded. Chalcedony is a name for very similar unbanded rocks, and jasper is used to name similar rocks that are red-brown and featureless. Agates for in lava flow tops and can be found on most Keweenaw beaches, although they are prized and captured by roving humans.
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