How is copper carbonate formed in nature

[val1ant]

i read on wikipedia that
2 Cu (s) + H2O (g) + CO2 + O2 → Cu(OH)2 + CuCO3 (s)

although doesn't the copper form copper oxide first? and then the copper oxide reacts with water and CO2 to form copper carbonate and copper hydroxide?

 

[Borek]

Wikipedia gives just the overall reaction equation. No idea about exact mechanism, although I would be surprised if it would be not researched to death. Sorry, I have no access to literature so I can't check it.