Minerals The Age of Discovery

green malachite mineral

In the 18th and 19th centuries, there was a great deal of interest in mineralogy.

Some collectors travelled all over the world searching for rare and impressive specimens to add to their collections. Many were attracted to Cornwall because of the great number of mines and the remarkable variety of minerals they produced.  


Photograph reproduced with the kind permission of Pat Comber


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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Azurite (Cu3(CO3)2(OH)2)

Click to see a larger version of this imageblue azurite mineral

Azurite is formed by the weathering of other copper minerals. 

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Quartz (SiO2)

Click to see a larger version of this imagequartz mineral specimen

Cold as ice?

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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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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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