It's very difficult to form this mineral out of graphite, despite them both being allotropes of carbon.
Stephen Haggerty found that the soil surrounding Pandanus candelabrum always has an abnormally high concentration of this mineral. Round examples of these minerals are often coated with a gum-like material called nyf. Chromium diopside is an indicator of the presence of the primary source of these minerals, which are called (*) Kimberlite pipes. It's very difficult to form this mineral out of graphite, despite them both being allotropes of carbon. For 10 points, name this mineral that has a value of 10 on the Mohs hardness scale.
Stephen Haggerty found that the soil surrounding Pandanus candelabrum always has an abnormally high concentration of this mineral.
diamonds