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Fluorite

#8284
SOLD
Fluorite from Denton mine, Hardin Co., Illinois, United States - 8284
Fluorite from Denton mine, Hardin Co., Illinois, United States - 8284

Fluorite

#8284
Availability
Sold
Size
5.5 x 4 x 3 cm - Sm Cabinet 
Formula
CaF2 (RRUFF)
Locality
Denton mine, Hardin Co., Illinois, United States

Not the perfect cabinet specimen but the yellow Fluorite is not so easy to come by.  Excellent study specimen with good color zoning and etching on crystal faces.

Fluorite

Formula
CaF2 
Crystal System
Isometric 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Disseminated 
Cleavage
Three perfect, octahedral cleavages. 
Luster
Vitreous (Glassy) 
Color
purple, clear, yellow, green, red, blue 
Streak
white 
Geological Setting
Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments  
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
4 

Data courtesy of Webmineral.

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