General Information:
Chemical Formula:Pb19Sb13S35Cl7
Composition:(Molecular Weight = 6,890.03 gm)Antimony 22.97 %
SbLead 57.14 %
PbSulfur 16.29 %
S Chlorine 3.60 %
Cl Empirical Formula: Pb19Sb13S35Cl7
IMA Status:Approved IMA 1980
Locality:Madjarovo, Arda River, Bulgaria.
Name Origin:Named for the locality.
Physical Properties: Color:green gray.
Diaphaniety:Opaque
Habits:Microscopic Crystals - Crystals visible only with microscopes., Acicular - Occurs as needle-like crystals., Aggregates - Made of numerous individual crystals or clusters.
Hardness:2.5-3 - Finger Nail-Calcite
Luster:Metallic
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