Birdwatch Note Rating
2024-05-10 22:14:15 UTC - HELPFUL
Rated by Participant: D4C92F3D9ED9522CC45848C42D4E05F60E9304AF987D52747D2168477159AF4E
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Original Note:
Copper patina first reacts with oxygen forming copper oxide and eventually becomes copper carbonate after reacting with CO2 in the air. Malachite is copper carbonate hydroxide and forms under specific conditions. https://www.sciencedirect.com/science/article/abs/pii/S0010938X98000936 https://www.sciencedirect.com/topics/earth-and-planetary-sciences/malachite#:~:text=Malachite%20is%20the%20another%20copper,copper%20orebodies%20in%20the%20vicinity.
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