Franklin, New Jersey

Formula: Mn2+7(SiO4)3(OH)2
Nesosilicate, humite group
Specific gravity: 3.848
Hardness: 5½ to 6
Streak: Very pale pink to white
Colour: Pink, violet-red, brownish-red to brown

Metamorphic environments
Hydrothermal environments

At Franklin, New Jersey, leucophoenicite is a late-stage hydrothermal or contact zone mineral in veins and skarn in a metamorphosed stratiform zinc-manganese orebody (AM55.1146), associated with willemite, franklinite, calcite, vesuvianite, garnet, sussexite, rhodochrosite, pyrochroite, tephroite, sonolite, jerrygibbsite, glaucochroite, manganosite, copper, and zincite (HOM).

At the Kombatmine, Namibia, leucophoenicite is associated with barysilite, spessartine, vesuvianite, baryte, copper and hausmannite (HOM).

Common impurities: Fe,Mg,Zn,Ca,Na,K,H2O

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