Crossword clue: arsenical iron pyrites; arsenopyrite.
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
a silver-white or grey ore of arsenic
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
a silver-white or grey ore of arsenic