1. Selenian: Selenian rocky planets are characterized by their high abundance of silicate minerals such as feldspars and pyroxenes. They often have a rocky terrain with numerous craters caused by meteorite impacts. Selenian planets are relatively common, making up approximately 40% of the rocky planet population. 2. Enceladian/Tritonian: Enceladian rocky planets, also known as Tritonian planets (referring to the moon Triton of Neptune), are characterized by their icy and frozen surface. They have low densities due to their high water content. These planets are less common, accounting for about 10% of the rocky planet population. The temperature range for Enceladian planets varies, typically ranging from around 30 Kelvin (-243 degrees Celsius) to 100 Kelvin (-173 degrees Celsius). 3. Adamean: Adamean rocky planets, often referred to as diamond planets, are extremely rare and unique. These planets contain a substantial amount of carbon, resulting in a composition primarily composed of diamond. The rarity of Adamean planets is very low, with only around 1% of the rocky planet population falling into this category. 4. Mineralic: Mineralic rocky planets are known for their stunning iridescent crystal terrains, creating a remarkable visual display. These planets often have a variety of metallic minerals, giving them a unique appearance. Mineralic planets are relatively uncommon, making up around 15% of the rocky planet population.