Strunzite (Mn<sup>2+</sup>Fe<sup>3+</sup><sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>(OH)<sub>2</sub>6H<sub>2</sub>O) is a light yellow mineral of the strunzite group, first discovered in 1957.
It crystallizes in the triclinic system and has a light, vitreous luster, a specific gravity of 2.52 and a Mohs hardness of 4. Associated minerals include beraunite, quartz and strengite.
It is named after Hugo Strunz, a Professor of Mineralogy at Technische Universität Berlin.