Another alternative is melchior, a nickel and copper alloy, which can also sometimes contain manganese.

Many enzymes contain manganese, making it essential for life, and is also found in chloroplasts.

It contains manganese in the +4 oxidation state.

It contains roughly 70% copper, 29% zinc, and 1.3% manganese.

It contains manganese in its +2 oxidation state.

These alloys commonly contain manganese and zinc, but there are other combinations known.

Jujube contains the potassium, phosphorus, manganese and calcium as the major minerals.

High strength alloys often contain 1 to 1.8% manganese.

Charcoal contains magnesium, iron, calcium, and manganese which easily dissolve in water.

For this reason, most broad-spectrum plant fertilizers contain manganese.