General Information:
Chemical Formula:
Pb4Fe++(As+++++O4)2Cl4
Composition:
(Molecular Weight = 1,304.30 gm)
Iron 4.28 % Fe
Arsenic 11.49 % As
Lead 63.54 % Pb
Chlorine 10.87 % Cl
Oxygen 9.81 % O
Empirical Formula:
Pb4Fe2+(AsO4)2Cl4
Environment:
Lead slags.
Locality:
Laurion, Attica, Greece.
Name Origin:
Named of Leo Neal Yedlin (1908-1997), micromount mineral collector of New Haven, Conneticut, USA.
Physical Properties:
Cleavage:
None
Color:
yellow or light orange.
Density:
5.88
Diaphaniety:
Translucent
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).,
Hardness:
4 - Fluorite
Luminescence:
Non-fluorescent.
Luster:
Adamantine
Streak:
light orange
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