Halo First Strike Spartan and Mjolnir Mass

First Strike Chapter 1:

Twenty-seven Spartans braced themselves and clung to the frame of the ship; they crouched in their MJOLNIR armor to absorb the shock of their rapid descent. Their armor was half a ton of black alloy, faintly luminous green ceramic plates, and winking energy shield emitters.

First Strike Chapter 2:

They gaped at Fred, mouths open; it was a reaction that he had often seen when soldiers first glimpsed a Spartan: two meters tall, half a ton of armor, splashed with alien blood. It was a mix of awe and suspicion and fear.

First Strike Chapter 27:

The Master Chief moved alongside her chair. His massive weight thudded through the thick deck plating. Two meters tall and half a ton of metal and somehow Dr. Halsey couldn't help thinking of him occasionally as the same little boy she had stolen from his parents in Elysium City.