Manganese

Manganese is one of the rarer Materials in Mechanic Miner.

Looks
Manganese, a greenish cube.

Where
Manganese can currently only be found at the bottom of the second mine appearing in act 1. Note that you must build a Air pump system to be able to reach the Manganse

Use
Manganese is used for several techs you unlock later in the game including Sawblade and Steel spike