Mafic rocks are rich in magnesium (Mg) and iron (Fe), hence the name "mafic" (magnesium and fic for iron). This leads to them being characterized by the presence of these minerals:

* Pyroxene: A group of silicate minerals like augite and hypersthene.

* Olivine: A silicate mineral with a green to olive-green color.

* Plagioclase Feldspar: A feldspar mineral rich in calcium (Ca).

* Amphibole: A group of silicate minerals like hornblende.

* Biotite: A dark mica mineral.

Sometimes, mafic rocks also contain minor amounts of other minerals like:

* Magnetite: An iron oxide mineral.

* Ilmenite: An iron titanium oxide mineral.

* Apatite: A phosphate mineral.

The exact mineral composition of a mafic rock can vary depending on the specific rock type and its formation process.