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Melanocerite-(Ce)

#BW58024
SOLD
Melanocerite-(Ce) from Cardiff Uranium mine, Haliburton Co., Ontario, Canada - BW58024
Melanocerite-(Ce) from Cardiff Uranium mine, Haliburton Co., Ontario, Canada - BW58024

Melanocerite-(Ce)

#BW58024
Availability
Sold
Size
6 x 2 x 2 cm - Sm Cabinet 
Formula
(Ce,Ca)5(SiO4,BO4)3(OH,0) (RRUFF)
Locality
Cardiff Uranium mine, Haliburton Co., Ontario, Canada
Tagged
REE mineral

Black to brown greasy looking crystal grains to 1cm. Melanocerite contains the REE cerium used in oil cracking during petroleum refining and used as a yellow coloring agent in ceramic and glass. 

Melanocerite-(Ce)

Formula
(Ce,Th,Ca)5(Si,B)3O12(OH,F)�n(H2O) (?) 
Crystal System
Trigonal 
Crystal Habit
Tabular, Metamict 
Cleavage
None, None, None 
Luster
Resinous 
Color
brown, black, dark brown, reddish brown 
Streak
light brown 
Class
Trigonal 
Fracture
Brittle - Conchoidal 
Hardness
5-6 

Data courtesy of Webmineral.

Collection
Bill Wilson Collection
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