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√KALA “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.
A noun appearing in Early Noldorin Word-lists as {ūru >>} auro, cognate of ᴱN. úr “sun”, and derived from {✶ourǝ >>} ✶ourū̆ (PE13/155). Elsewhere Q. Úr(in) was a name for the Sun from the 1910s up through the 1950s, but Tolkien eventually changed this to Vása (MR/198).