Alwayslooking2
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Also the knots you see are crystals that are black . It was found in southeast Missouri.
Not a great picture but black minerals from Missouri are a big clue.
It looks like stream eroded Galena. The state mineral of Missouri is Galena (the ore of lead). The black cubes are probably Sphalerite (zinc ore). The Sphalerite is harder than the Galena so it doesn't erode as fast. Galena and Sphalerite are frequently found together..
Not a great picture but black minerals from Missouri are a big clue.
It looks like stream eroded Galena. The state mineral of Missouri is Galena (the ore of lead). The black cubes are probably Sphalerite (zinc ore). The Sphalerite is harder than the Galena so it doesn't erode as fast. Galena and Sphalerite are frequently found together..