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Heterosite: Fe+++PO4 Alluaudite: NaCaFe++(Mn,Fe++,Fe+++,Mg)2(PO4)3
Comments: Purple crystalline heterosite with yellow coatings of alluaudite. Location: Palermo Mine, North Groton, Grafton County, New Hampshire, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Heterosite: Fe+++PO4 Graftonite: (Fe++,Mn,Ca)3(PO4)2
Comments: Whitish graftonite intergrown with dark purple to brown heterosite. Location: Grafton, Grafton County, New Hampshire, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species