Eosphorite

General Information: Chemical Formula:MnAl(PO4)(OH)2·(H2O) Composition:(Molecular Weight = 228.92 gm)Manganese 24.00 % MnAluminum 11.79 % AlPhosphorus 13.53 % P Hydrogen 1.76 % H Oxygen 48.92 % O  Empirical Formula: Mn2+Al(PO4)(OH)2·(H2O) Environment:Granitic pegmatite. Mn-end member of a series with childrenite. Locality:Branchville, Fairfield County, Conneticut, USA. Name Origin:Named from the Greek for "dawn-bearing," in allusion to the pink color.Physical Properties: Cleavage:[100] Indistinct Color:light pink, yellow brown, light brown, light yellow, or colorless. Density:3.06 - 3.1, Average = 3.08 Diaphaniety:Transparent to Translucent Habits:Massive - Fibrous - Distinctly fibrous fine-grained forms., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Striated - Parallel lines on crystal surface or cleavag e face. Hardness:5 - Apatite Luminescence:Non-fluorescent. Luster:Vitreous - Resinous Streak:whiteMore details...