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Bastnasite-(Ce) with Fluorite

#BW58033

Bastnasite-(Ce) with Fluorite

#BW58033
Availability
Sold
Size
4 x 3 x 2 cm - Miniature 
Formula
CeCO3F (RRUFF)
Locality
Conqueror No. 9 Claims, Lincoln Co., New Mexico, United States
Tagged
carbonate , REE mineral

Pink grains of Bastnasite from 1 to 5mm in spongy Fluorite mass. The specimen probably also contains lanthanum. 

The claims are adjacent to the Red Cloud mine, which was a large producer of lead-copper-silver ore from 1920-1922. The Conqueror mine was developed during World War II for Fluorite but ore shipments were not made until the 1950's.  In 1954-55, about 60 tons of Bastnasite concentrate was produced from the Fluorite. The Fluorite ore contained about 1% bastnasite. 

Bastnasite-(Ce)

Formula
CeCO3
Crystal System
Hexagonal 
Crystal Habit
Prismatic, Massive - Granular 
Cleavage
Imperfect, Indistinct, None 
Luster
Vitreous - Greasy 
Color
yellow, reddish brown 
Streak
white 
Class
Hexagonal - Ditrigonal Dipyramidal 
Fracture
Uneven 
Hardness
4-5 

Data courtesy of Webmineral.

Collection
Bill Wilson Collection

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