Crystalline bright black needles forming on the surface of malleable copper

Made:
before 1889
Crystalline bright black needles forming on the surface of

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Crystalline bright black needles forming on the surface of
Science Museum Group
© The Board of Trustees of the Science Museum

Crystalline bright black needles forming on the surface of malleable copper, from Swansea, presented by J. Benson

Details

Category:
Metallurgy
Object Number:
1889-164/659
type:
specimen
credit:
John Percy Collection