A rare mineral form of copper oxide that occurs in thin, hair-like crystals or fibers.
From Greek 'chalkos' (copper), 'trichos' (hair), and '-ite,' literally meaning 'copper-hair stone' because of its distinctive thin, delicate crystal structure.
The name chalcotrichite perfectly captures its appearance—if you look at it under magnification, it looks like someone wove hair out of pure copper oxide, which is absolutely stunning and scientifically rare.
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