Crossword clue: a red or yellow or brown mineral; an oxide of iron that is a common constituent of rust

The most common answer is goethite (8 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

goethite 8 letters wn-def

a red or yellow or brown mineral; an oxide of iron that is a common constituent of rust

gothite 7 letters wn-def

a red or yellow or brown mineral; an oxide of iron that is a common constituent of rust