Plagionite

Plagionite Locality: San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia Size: miniature, 3.3 x 3.0 x 1.7 cm © Rob Lavinsky / iRocks

Chemical Formula: Pb5Sb8S17
Name Origin: From the Greek, plagios meaning “oblique.”

History

Discovery date : 1833
Town of Origin : MINE GRAF JOST-CHRISTINA-ZECKE, WOLFSBERG, HARZ
Country of Origin : ALLEMAGNE

Optical properties

Optical and misc. Propertie : Opaque
Reflective Power : 33,2-41% (580)

Physical properties

Hardness : 2,50
Density : 5,54
Color : blackish grey
Luster: metallic
Streak: blackish grey; reddish brown
Break: irregular; conchoidal
Cleavage : yes

Photos:

Plagionite and Zinkenite Locality: Graf Jost-Christian Mine, Wolfsberg, Harz Mountains, Saxony-Anhalt, Germany (Type Locality for Plagionite and Zinkenite) Overall Size: 4x3x1.5 cm Crystals: 0.1-1.0 mm © JohnBetts-FineMinerals
Plagionite Locality: San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia Size: 3.3 x 3.0 x 1.7 cm. © Rob Lavinsky / iRocks
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