What are the red bits formed in reduction of malachite with carbon

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Offline mattmckee

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Hi, showed a class reduction of malachite with carbon, followed instructions on the fabulous practicalchemistry website, got plenty of copper, but also a few small lumps of bright brick red substance.   Anyone any idea what it is... [???]

cheers

Matt

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Offline lightarrow

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Hi, showed a class reduction of malachite with carbon, followed instructions on the fabulous practicalchemistry website, got plenty of copper, but also a few small lumps of bright brick red substance.   Anyone any idea what it is... [???]

cheers

Matt
Cu2O, copper (I) oxide.