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Calcite on Sphalerite

#RW48772
SOLD
Calcite from Blackstone mine, Shullsburg, Lafayette Co., Wisconsin, United States - RW48772
Calcite from Blackstone mine, Shullsburg, Lafayette Co., Wisconsin, United States - RW48772

Calcite on Sphalerite

#RW48772
Availability
Sold
Size
9.5 x 5.5 x 2.5 cm - Cabinet 
Formula
CaCO3 (RRUFF)
Locality
Blackstone mine, Shullsburg, Lafayette Co., Wisconsin, United States
Tagged
carbonate

An excellent specimen with good provenance. The specimen was personally collected by RJ Waidler in 1968 from underground at the Blackstone mine. The Calcite crystals are of rhombic forms with a cool frosted, faint yellow color. The crystals average about 8mm. The matrix is massive, crystalline dark reddish brown Sphalerite.

Calcite

Formula
CaCO3 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Stalactitic, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
colorless, white, pink, yellow, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
3 

Data courtesy of Webmineral.

Collection
Robert J. Waidler Collection
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