General Information:
Chemical Formula:
MnAl(PO4)(OH)2·(H2O)
Composition:
(Molecular Weight = 228.92 gm)
Manganese 24.00 % Mn
Aluminum 11.79 % Al
Phosphorus 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:
white
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