The question is from a article that i'm reading. answer it slowly and carefully.
what is found in kimberlite deposits?

Kimberlite is composed of at least 35% olivine, together with other minerals such as mica, serpentine, and calcite (Jackson, 1997). Geologists call it an ultrabasic rock, which means it does not contain any quartz or feldspar, the two most common rock-forming minerals.

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