Fluororichterite is a rare amphibole with formula Na(NaCa)Mg5Si8O22F2.

[2] At the type locality in the Ilmen Mountains fluororichterite occurs in carbonate veins in amphibolites and ultramafic rocks.

[5] In the Essonville occurrence in Wilberforce, Ontario it occurs in a limestone lens within a gneiss and is associated with phlogopite and calcite.

[6] It has also been reported from Austria, Germany, Italy, Spain and China.

[2] At Coyote Peak in the Coastal Range, Humboldt County, California, it occurs with a variety of rare minerals in an alkaline mafic diatreme.