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Found these in the Netherlands - what are they?

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My son and I found these on a riverbank (Mass) in the Netherlands. Does any one have any idea what they are? Totally clueless.

pictures here https://plus.google.com/photos/106927246843955907211/albums/5800622919367018529

asked Oct 18, 2012 by Boxlady (120 points)

1 Answer

0 votes

Hard to tell as the pictures are zoomed out - but if I had to take a lucky guess I'd say the first one (black) is hematite, and the silvery one galena. The last one with the small crystals is hard to tell from the photo.

answered Oct 19, 2012 by hershel (49,750 points)