Among the following, which material is known for its diverse chemical composition often found in cosmic dust?

KREEP, which stands for Potassium (K), Rare Earth Elements (REE), and Phosphorus (P), is a unique lunar basaltic rock known for its diverse chemical composition. It is primarily associated with lunar highland and mare basalts and is characterized by an abundance of these elements. KREEP-rich materials are considered significant in the study of the Moon's geological history and the processes that formed its surface.

The presence of KREEP suggests that these rocks formed under conditions that allowed for varied chemical evolution and concentrations of elements, which is similar to what is observed in cosmic dust. Cosmic dust can contain an array of elements and compounds, often derived from different celestial sources, just like KREEP showcases a variety of elements within its composition.

In contrast, the other choices reflect different materials or phenomena. Natural glass is usually formed from the rapid cooling of molten materials and lacks the broad elemental diversity associated with KREEP. Comets, while they are diverse, are primarily composed of ice, dust, and rocky material and aren't classified by a specific chemical makeup like KREEP. Pyroxferroite is a mineral that is more limited in its composition and doesn't represent the broad spectrum found in cosmic dust or KREE