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Sphalerite (lamellar Spinel Law-twinned) from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

 
Sphalerite (lamellar Spinel Law-twinned) from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Sphalerite (lamellar Spinel Law-twinned) from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Sphalerite (lamellar Spinel Law-twinned) from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Sphalerite (lamellar Spinel Law-twinned) from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Sphalerite (lamellar Spinel Law-twinned) from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Sphalerite (lamellar Spinel Law-twinned) from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

DESCRIPTION:No. 74690
Mineral:Sphalerite (lamellar Spinel Law-twinned)
Locality:Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri
Description:Lustrous black sphalerite crystals twinned following the Spinel Law of isometric twinning. Several surfaces of the sphalerite crystals exhibit lamellar twinning, resulting in parallel bands of alternating left-right crystal structure. Ex. Julius Weber (1914-2003) collection, principle photographer of the Encyclopedia of Minerals (1974)
Overall Size:5x4x2.5 cm
Crystals:8-30 mm
Status: Sold - Posted here for reference only
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