General Information:
Chemical Formula:
(Ca,Na)3(Mn,Mg)2(AsO4)3
Composition:
(Molecular Weight = 618.74 gm)
Sodium 2.79 % Na
Calcium 14.57 % Ca
Magnesium 1.96 % Mg
Manganese 13.32 % Mn
Arsenic 36.33 % As
Oxygen 31.03 % O
Empirical Formula:
Ca2.25Na0.75Mn2+1.5Mg0.5(AsO4)3
Physical Properties:
Cleavage:
None
Color:
grayish yellow, yellowish red, honey yellow, or orange.
Density:
4.21 - 4.46, Average = 4.33
Diaphaniety:
Transparent to Translucent
Hardness:
4.5-5
Luster:
Resinous
Streak:
white
More details...