{{Distinguish|Gratonite}} {{Infobox mineral | name = Graftonite | boxwidth = | boxbgcolor = | image = Graftonite with Triphylite Iron manganese calcium phosphate Palermo Mine, North Groton, New Hampshire 2863.jpg | imagesize = | alt = | caption = Graftonite with Triphylite Iron manganese calcium phosphate Palermo Mine, North Groton, New Hampshire | category = Phosphate minerals | formula = {{chem2|(Fe^{2+},Mn,Ca)3(PO4)2}} | molweight = | strunz = 8.AB.20 | dana = | system = Monoclinic | class = Prismatic (2/m) <br/><small>(same H-M symbol)</small> | symmetry = ''P2''<sub>1</sub>/c | unit cell = | color = | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | mohs = | luster = | streak = | diaphaneity = | gravity = | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = }}
'''Graftonite''' is an iron(II), manganese, calcium phosphate mineral with the chemical formula {{chem2|(Fe^{2+},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.
It was first described from its type locality of Melvin Mountain in the town of Grafton, in Grafton County, New Hampshire.
==References== *[http://www.mindat.org/min-1735.html Mindat with location data] *[http://www.webmineral.com/data/Graftonite.shtml Webmineral data]
{{Manganese minerals}}
Category:Iron(II) minerals Category:Manganese(II) minerals Category:Calcium minerals Category:Phosphate minerals Category:Monoclinic minerals Category:Minerals in space group 14
{{phosphate-mineral-stub}}