Chromium
From Tardis Wiki, the free Doctor Who reference
Chromium was an element on the periodic table.
The Wibliwee came to Earth to obtain refined trace elements — chromium, tellurium, and molybdenum — to repair their ship. (PROSE: Moon Graffiti)
Chromium and manganese were expected elements to detect in stones. (PROSE: Eternity Weeps)
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