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3DNative arsenic.
This sample of native (naturally occurring) arsenic is from the Burraton Coombe Quarry, St. Stephen-by-Saltash, Cornwall, in the UK.
It happened to arrive in my mailbox on the very day Oliver Sacks was visiting the Periodic Table Table, so we got to open it together.
Source: Andrew Goodall
Contributor: Andrew Goodall
Acquired: 12 November, 2002
Price: Donated
Size: 1"
Purity: >80%