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rock with golden layers

Posted by miguel cavazos  
miguel cavazos
rock with golden layers
February 19, 2012 01:50AM
can some one identify if its gold on the layers
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open | download - IMAG0248.jpg (679.7 KB)
miguel cavazos again
Re: rock with golden layers
February 19, 2012 02:02AM
look at it
Attachments:
open | download - IMAG0255.jpg (731.9 KB)
Re: rock with golden layers
February 19, 2012 02:14AM
    
looks like pyrite
avatar Re: rock with golden layers
February 19, 2012 02:18AM
    
Foul language in the chatroom won't get you much help around here, Miguel.
avatar Re: rock with golden layers
February 19, 2012 04:31AM
Pyrite more than likely.
Re: rock with golden layers
February 19, 2012 01:33PM
Check the hardness: goldcan easily be scratched with a knife , pyrite not.
Re: rock with golden layers
February 19, 2012 08:28PM
Gold is malleable pyrite is not and will crush into tiny angular fragments. Gold would be hammered out flat and as was said if you scratch tested a flat surface of gold, a pin would leave a groove not a scratch with powdered fragments.
Hope this helps.
Steve.
Re: rock with golden layers
February 19, 2012 11:13PM
Dear Miguel,

Looks to be an iron sulphide: pyrite, marcasite, or even a mixture of the 2 minerals. Hope this helps.

Your friend, Steve
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