A word appearing as ᴱQ. tambina “of copper” in the Qenya Lexicon of the 1910s, adjectival form of ᴱQ. tambe “copper, bronze” under the early root ᴱ√KALA¹ “shine golden” (QL/44).

Neo-Quenya: Since I use ᴺQ. tambë only for “bronze” for purposes of Neo-Quenya, I would use ᴺQ. tambina as “of bronze” while for “of copper” I would use ᴺQ. urusta.