1 Calories Burned For Treadmill: 10 mph (6 minutes per mile). 2  Calories Burned For Treadmill: 5% Incline, 5 mph (12 minutes per mile). 3  Calories Burned For Treadmill: 5% Incline, 5.45 mph (11 minutes per mile). 4  Calories Burned For Treadmill: 5% Incline, 6 mph (10 minutes per mile).
Well my shoes arrived and as I expected, the posters mentioning the stone and looking it up on Google, all of which I did along with looking at Dictionary .com before posting were completely wrong. Nike's color is very different from the literal description of the color. It is more of a dark gray/blue color.Not black at all, if someone thinks the NIKE version of the color is black then they would think my silver Audi is blue!ell my shoes arrived and as I expected, the posters mentioning the stone and looking it up on Google, all of which I did along with looking at Dictionary .com before posting were completely wrong. Nike's color is very different from the literal description of the color. It is more of a dark gray/blue color.
Microscopic crystals of various types of feldspars may yield the unique blue, green, purple or bronze colors associated with rainbow obsidian. The reflectance of rainbow obsidian is likely attributed to a preferred orientation of microscopic crystals of feldspar or mica oriented along flow layers.