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Fluorite & Calcite

#PD32167
SOLD
FLUORITE from Minerva #1 mine, Hardin Co., Illinois, United States - PD32167
FLUORITE from Minerva #1 mine, Hardin Co., Illinois, United States - PD32167

Fluorite & Calcite

#PD32167
Availability
Sold
Size
11 x 7 x 5 cm - Cabinet 
Formula
CaF2 (RRUFF)
Locality
Minerva #1 mine, Hardin Co., Illinois, United States

Nice aesthetic specimen with Blue Fluorite crystals to 1.3cn associated with dogtooth Calcite. Sphalerite in the matrix along with snow white Kaolinite(?).

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.

Collection
Phillips Collection
Mineralpedia
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On Dakota Matrix
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WebMineral
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