Garnitite xenolith assumed to have originated in the mantle transition zone, 400 to 670 km depth, brought up to the surface in a kimberlitic eruption 34 million years ago. Perhaps the deepest rock found so far on the Earth's surface.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
