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Rocks and Metals

Minerals

 

Goethite (HFeO(OH))

Click to see a larger version of this imageGoethite mineral specimen

A German Poet.


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Bornite (Cu2FeS4)

Click to see a larger version of this imagebornite mineral specimen

The Peacock copper.


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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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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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