General Information:
Chemical Formula:
Mn2(Nd,Ce,La)(AsO4)(OH)4
Composition:
(Molecular Weight = 459.29 gm)
Lanthanum 3.02 % La
Cerium 9.15 % Ce
Manganese 23.92 % Mn
Arsenic 16.31 % As
Hydrogen 0.88 % H
Neodymium 18.84 % Nd
Oxygen 27.87 % O
Empirical Formula:
Mn2+2Nd0.6Ce0.3La0.1(AsO4)(OH)4
IMA Status:
Approved IMA 1987
Physical Properties:
Cleavage:
None
Color:
pink brown or reddish brown.
Density:
4.45
Diaphaniety:
Subtranslucent
Hardness:
3-4 - Calcite-Fluorite
Luster:
Vitreous - Dull
Streak:
light brown
More details...