Pale pink crystal aggregates of the very rare Mn mineral manganotychite from the type locality in Lovozero (Lovozero Massif, Murmansk Oblast, Russian Federation) and only one of the two known localities worldwide. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Manganotychite
Manganotychite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Na₆Mn²⁺₂(CO₃)₄(SO₄).
It crystallizes in the cubic crystal system (space group Fd3). It is a member of the Northupite structural group.
Key properties: Mohs hardness 4; specific gravity 2.7; Vitreous to dull luster.
IMA symbol Mtyc, IMA status: approved, named in 1989.
An uncommon mineral formed in pegmatite veins in a differentiated alkalic massif (Mt. Alluaiv, Kola Peninsula, Russia).
It is found associated with Shortite, pirssonite, sidorenkite, kogarkoite, many other species (Mt. Alluaiv, Kola Peninsula, Russia); trona, shortite, petersenite-(Y), reederite-(Y).
As the manganese analog of tychite.