Manganese ironspot bricks undergo a powerful, transformative process, and in the end they have a metallic sheen that changes throughout the day.  Photo 6 of 9 in RM-3 Episode Three: Dirt

RM-3 Episode Three: Dirt

6 of 9

Manganese ironspot bricks undergo a powerful, transformative process, and in the end they have a metallic sheen that changes throughout the day.