 Magnetite sand.
Another element (compound actually) from Chris. He panned this sand from a Lake Michigan beach, like panning for gold except you get black magnetic granules instead of rich. It is very magnetic, as you can see from this picture (there's a magnet under the paper, which is making the sand stick up).
Source: Chris Carlson
Contributor: Chris Carlson
Acquired: 15 August, 2002
Price: Donated
Size: 1"
Purity: <40%
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