General Information:
Chemical Formula:
Mn++Fe+++2(PO4)2(OH)2·6(H2O)
Composition:
(Molecular Weight = 498.68 gm)
Manganese 11.02 % Mn
Iron 22.40 % Fe
Phosphorus 12.42 % P
Hydrogen 2.83 % H
Oxygen 51.33 % O
Empirical Formula:
Mn2+Fe3+2(PO4)2(OH)2·6(H2O)
Locality:
Hangedor Pegmatite, Oberfalz, Bavaria, Germany.
Name Origin:
Named for Hugo Strunz (1910-), mineralogist, Berlin, who authored the Strunz system of mineral classification.
Physical Properties:
Cleavage:
[???] Good
Color:
brownish yellow, golden yellow, or straw yellow.
Density:
2.47 - 2.56, Average = 2.51
Diaphaniety:
Translucent
Habits:
Acicular - Occurs as needle-like crystals., Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.,
Hardness:
4 - Fluorite
Luster:
Vitreous (Glassy)
Streak:
light yellow
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