General Information:
Chemical Formula:
Mn++3(AsO4)2·4(H2O)
Composition:
(Molecular Weight = 514.71 gm)
Manganese 32.02 % Mn
Arsenic 29.11 % As
Hydrogen 1.57 % H
Oxygen 37.30 % O
Empirical Formula:
Mn2+3(AsO4)2·4(H2O)
Environment:
Found on loellingite-frankllinite-willemite-calcite ores. An inadequately described mineral. Only one specimen known.
Locality:
Sterling Hill Mine, Ogdensburg, New Jersey, USA.
Name Origin:
Named for the locality.
Physical Properties:
Cleavage:
[???] Perfect
Color:
white or light pink.
Density:
2.95
Habits:
Spherical - Spherical, rounded aggregates., Tabular - Form dimensions are thin in one direction.,
Hardness:
3 - Calcite
Luster:
Silky - Pearly
Streak:
white
More details...