agent_nycto comments on Rock with a black spot

Rock with a black spot (lemmy.today)

submitted 3 months ago by Wren@lemmy.today to c/cool_rocks@lemmy.today

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I found it on a beach in lake of the woods.

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[–] agent_nycto@lemmy.world 1 point 2 months ago

Looks like a tormilated quartz