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Rocks and Metals



Amethyst (SiO2)

Click to see a larger version of this imagelarge amethyst mineralAmethyst has been used for thousands of years to make jewellery and is still a popular gemstone.

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Mineral collectors

Click to see a larger version of this imagea geevor sampler working underground taking a sample of rock with his pick

Cornwall has long been known for having a huge variety of minerals.

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Mineral Identification

Click to see a larger version of this imagemineral specimen glowing green and orange under ultra violet light

There are over 4000 different minerals.

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Comment left by mineral man on 2010-06-29 15:34:14

i like pictures

Comment left by Sinjary on 2010-09-14 02:09:36

nice ..


Comment left by Peter Barnes on 2010-10-19 12:05:53

Your data on the Azurite page says: "Data Panel: Iron Sulphide: Azurite" But azurite is iron carbonate, not sulphide (as shown by your correct formula).


Comment left by Peter Barnes on 2010-10-19 12:08:47

Re my previous comment - I should have said azurite is copper carbonate! Now we've both been wrong! ............ GEEVOR REPLY: Thank you for pointing our typing error out to us Peter, we have now amended it above.


Comment left by TT on 2012-05-16 16:16:22

Hi, I have a quartz like the picture Sio2 above and am cleaning it with iron out. It is from Arkansas.


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