What are kimberlites?
Kimberlite is a type of igneous rock.
Kimberlite is a type of igneous rock. Olivine is the most abundant mineral found in kimberlite but other minerals that may be found in kimberlite include phlogopite, mica, diopside, and calcite. Much of the diamonds presently mined come from kimberlite ores.
Kimberlite can be hard to identify, as it comes in many colors. Some examples are shown below.
Second example of kimberlite
You can read more about kimberlite here.