brownish red

A mineral of a brownish red color and vitreous luster, consisting chiefly of the silicates of iron, zirconia, and lime.

It is brownish red, and its nose is prolonged in the form of a sharp blade.

of a yellowish red or brownish red color

Ferruginous quartz, of a blood-red or brownish red color, sometimes with a tinge of yellow. n

An alkaline salt of fluorescein, obtained as a brownish red substance, which is used as a dye