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content. It is now believed that
Delafontaine's decipium sample was a mixture of
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Comptes rendus hebdomadaires des séances de l'Académie des sciences
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Comptes rendus hebdomadaires des séances de l'Académie des sciences
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Decipium was considered to be in the cerium group of rare earths.
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was the proposed name for a new chemical element isolated by
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In 1880, spectral analysis proved that decipium had a high
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The Lost
Elements: The Periodic Table's Shadow Side
113:"Sur le décepium, métal nouveau de la samarskite"
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