Sisumudelite

Sisumudelite is a rare mineral discovered in 2019, named after the Sisumut mine in Greenland, where it was first found. It is a complex oxide mineral with the chemical formula (Na,K)2Ca2(Fe,Mn)4Ti2Si8O28. Sisumudelite crystallizes in the triclinic crystal system and typically forms small, dark brown to black crystals or granular masses. It is often associated with other minerals such as aegirine, arfvedsonite, and eudialyte.

The mineral's structure is characterized by a complex framework of silicon-oxygen tetrahedra and octahedrally coordinated transition metals. This structure gives sisumudelite its unique physical and chemical properties. It is notable for its high content of transition metals, particularly iron and manganese, which contribute to its magnetic properties.

Sisumudelite is of interest to mineralogists and geologists due to its rarity and the unique conditions under which it forms. Its discovery has provided valuable insights into the geological processes occurring in the Sisumut mine and similar environments. Despite its scientific significance, sisumudelite is not known to have any practical applications in industry or technology.