Iron Chromium Oxide
This page is the CodyCross answer for the clue below from City Life, Group 1657, Puzzle 5 (Rodents and Insects).
Question is: Iron Chromium Oxide
and the answer is: CHROMITE
Word Meaning:
CHROMITE — (mineralogy) A dark brown mineral species with the formula FeCr₂O₄.
Definitions from Wiktionary.