Mars                                 

Crust and surface:

The surface of Mars is mostly made of iron-rich basaltic rock (a igneous rock) and like Earth have a thin crust.

Mantle:

 Silicate rock which possibly is hotter than mantle of Earth in according depths.

Core:

 Mars's core composition probably is iron and sulfides and it's radius should be around 800-1500 miles (1300-2400 km).

now label this picture: