Graftonite
![](/Images/godic/202501/16/Graftonite_with_Triphylite_Iron_manganese_calcium_phosphate_Palermo_Mine,_North_Groton,_New_Hampshire_28632650.jpg")
Graftonite is an iron(II), manganese, calcium phosphate mineral with formula: (Fe,Mn,Ca)3(PO4)2. It forms lamellar to granular translucent brown to red-brown to pink monoclinic prismatic crystals. It has a vitreous luster with a Mohs hardness of 5 and a specific gravity of 3.67 to 3.7.