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Can anyone identify this rock?

(2 Posts)
MrsFogi Sun 16-Jan-11 18:28:15

We bought a rock at the Natural History Museum the other week and I forgot to check what it was, now DD wants to know. It looks like pyrite but is silver in colour rather than gold.

kissingfrogs Sun 16-Jan-11 21:45:06

iron pyrite (iron disulphide containing nickel/colbalt).
In the crystal world it is known as the Stone of Protection.

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