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0 item @ $0.00  

Allanite-(Ce) with Thorite

#BW58041

Allanite-(Ce) with Thorite

#BW58041
Availability
Sold
Size
4.5 x 3 x 2.5 cm - Miniature 
Formula
CaCeFe2+Al2(Si2O7)(SiO4)O(OH) (RRUFF)
Locality
Yates mine, Sandy Creek, Otter Lake, Quebec, Canada
Tagged
REE mineral

Thick plates of black Allanite to 5mm and 3cm wide. Excellent specimen with black Thorite between the plates of Allanite. 

Although rare earth elements are relatively abundant in the Earth's crust, they are rarely concentrated into mineable ore deposits. For instance, cerium ranks around 25th in the lising by abundance in the Earth's crust of all naturally occuring elements. The ores of rare earth elements are mineralogically and chemically complex and commonly radioactive. This specimen contians the rare earth element, cerium. Cerium makes an excellent oxidizer. It is typically used for catalytic converters. 

Radioactive!!

Allanite-(Ce)

Formula
CaCeFe2+Al2(Si2O7)(SiO4)O(OH) 
Crystal System
Monoclinic 
Crystal Habit
Massive - Granular, Disseminated 
Cleavage
Imperfect, Imperfect, None 
Luster
Vitreous - Greasy 
Color
brown, reddish brown, black 
Streak
grayish brown 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
5.5 

Data courtesy of Webmineral.

Collection
Bill Wilson Collection
Special Info
Radioactive!!

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