Commodities of Martian Rails: Bricks

Martian Rails, the recent board game made by Mayfair Games about railroading on the Red Planet in which players build tracks and haul freight, has a long list of cool commodities that players can transport to generate revenue for their rail companies. For example:

Bricks -- Made from the desert regolith of Mars. Certain geographical areas have the material to make superior bricks.

Martian Rails is loaded with references to Martian SF!