In this case it actually derives from Spanish. The Spanish first found the metal and called it "platina" in the 18th century. In the early 19th century they gave the metal its now latin sounding name.
You could also go back further in history and say that platina is a deriviation of the french word "plate".
U5urPator t1_j18qhtn wrote
Reply to comment by RoastedRhino in [OC] English Words of Spanish Origin and the Number of Mentions in Wikipedia by OfficialWireGrind
In this case it actually derives from Spanish. The Spanish first found the metal and called it "platina" in the 18th century. In the early 19th century they gave the metal its now latin sounding name.
You could also go back further in history and say that platina is a deriviation of the french word "plate".