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Bournonite with Sphalerite and Pyrite
Bournonite with Sphalerite and Pyrite. Bournonite with Sphalerite and Pyrite.

Fluorescent light (daylight)
 

ET51AI4: Druse of Bournonite crystals forming cyclic twins with very well defined parallel polycrystalline growths. They are very bright and are with groups of black Sphalerite crystals and small Pyrite crystals.
Herja Mine, Chiuzbaia, Baia Sprie, Maramures  Romania (1960-1970)

Specimen size: 11.5 × 10.2 × 4.1 cm = 4.53” × 4.02” × 1.61”

Main crystal size: 2 × 1.5 cm = 0.79” × 0.59”






  
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