What is "crocoite"

Crocoite \Cro"co*ite\ (kr?"k?-?t), n. [Gr. ???? saffron.] (Min.) Lead chromate occuring in crystals of a bright hyacinth red color; -- called also red lead ore.

n. (context mineral English) A rare red mineral; lead chromate, leadchromiumoxygen₄.

Crocoite is a mineral consisting of lead chromate, Pb Cr O, and crystallizing in the monoclinic crystal system. It is identical in composition with the artificial product chrome yellow used as a paint pigment.