General Information:
Chemical Formula:PbMn3Al4(CO3)4(SO4)O5·5(H2O)
Composition:(Molecular Weight = 986.11 gm)Manganese 16.71 %
MnAluminum 10.94 %
AlHydrogen 1.02 %
H Lead 21.01 %
PbCarbon 4.87 %
C Sulfur 3.25 %
S Oxygen 42.18 %
O Empirical Formula: PbMn2+3Al4(CO3)4(SO4)O5·5(H2O)
Environment:Found as fissure fillings with cerrusite in sooty pyrolusite and Fe oxides in polymetallic ore zone in granodiorite.
Locality:Sardab, E of Altyn-Topkansk ore field, Kuraminsk Mountains, Kazakhstan.
Name Origin:Named after B. N. Nasledov (1891-1942) of Russia.
Physical Properties: Color:snow white.
Density:3.069
Habits:Oolitic -
Hardness:2 - Gypsum
Luster:Silky
Streak:white
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