The Moon has a bulk composition closely resembling the Earth's mantle and crust together, without the Earth's core.
Europa is similar in bulk composition to the terrestrial planets, being primarily composed of silicate rock (geology).
The planet's mass and radius indicate that it is a gas giant with a similar bulk composition to Jupiter.
In addition, the observed colours are not necessarily representative of the bulk composition of the satellite.
Based on its bulk density of 1.88 g/cm, Titan's bulk composition is half water ice and half rocky material.
The other minerals in the rock are termed accessory, and do not greatly affect the bulk composition of the rock.
The chemical nature of a membrane's surface can be quite different from its bulk composition.
Consequently, the thin optical surface layer could be quite different from the regolith underneath, and not representative of the bulk composition of the body.
In determining the habitability potential of a body, studies focus on its bulk composition, orbital properties, atmosphere, and potential chemical interactions.
In practice, the composition varies with the bulk composition of the clinker, subject to certain limits.