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Sphalerite with Quartz, Fluorite

#PD37850

Sphalerite with Quartz, Fluorite

#PD37850
Availability
Sold
Size
8.5 x 5 x 5 cm - Sm Cabinet 
Formula
ZnS (RRUFF)
Locality
Rosiclare, Hardin Co., Illinois, United States
Tagged
sulfide

Deep red Sphalerite crystals to 3mm. The blades look like Baryte and perhaps were at one time, but were totally replaced (?) by micro Quartz crystals. Minor Calcite and Fluorite on the backside.

Sphalerite

Formula
ZnS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Granular, Colloform 
Cleavage
Perfect, Perfect, Perfect 
Luster
Resinous - Greasy 
Color
brown, yellow, red, green, black 
Streak
brownish white 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
3.5-4 

Data courtesy of Webmineral.

Collection
Phillips Collection

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