Silicaceous Type Asteroids

Silicaceous Type

As a solar system forms, a population of asteroids might form close enough to the young and active sun so that they become differentiated bodies.  These Silicaceous asteroids are heated sufficiently by the electromagnetic currents so that minerals will become separated, much like the process experienced by larger worlds due to their internal heating.  As the sun begins to stabilize and cool down, what is left is a rocky body that typically has an olivine crust surrounding a nickel-iron alloy core.