Mote of Earth

A Mote of Earth is a trade item. 10 motes can be combined into one.

Source

 * Mined from Fel Iron, Adamantite, and Khorium veins.
 * Drop off the various Earth Elementals of Outland. These elementals can be found in Blade's Edge Mountains, Nagrand, Netherstorm, and Shadowmoon Valley.
 * Via the Mining ability Earth Shatter, can be broken into 10 motes.

Blacksmithing

 * Adamantite Sharpening Stone
 * Fel Sharpening Stone

Engineering

 * Elemental Blasting Powder