General Information:
Chemical Formula:Pb4Fe++(As+++O3)2Cl4·2(H2O)
Composition:(Molecular Weight = 1,308.33 gm)Iron 4.27 %
FeArsenic 11.45 %
AsHydrogen 0.31 %
H Lead 63.35 %
PbChlorine 10.84 %
ClOxygen 9.78 %
O Empirical Formula: Pb4Fe2+(AsO3)2Cl4·2(H2O)
Environment:Weathered lead slag.
Locality:Laurion, Greece.
Name Origin:Named for Neal Yedlin (1908-1977), U. S. Mineralogist, who discovered the mineral.
Physical Properties: Cleavage:None
Color:bright orange.
Density:5.89
Habits:Microscopic Crystals - Crystals visible only with microscopes., Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).,
Luster:Adamantine
Streak:pale orange
More details...
