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Davidite-(La)

#BW58025
SOLD
Davidite-(La) from Pandora prospect, Quijotoa dist., Pima County, Arizona, United States - BW58025
Davidite-(La) from Pandora prospect, Quijotoa dist., Pima County, Arizona, United States - BW58025

Davidite-(La)

#BW58025
Availability
Sold
Size
5 x 3 x 3 cm - Miniature 
Formula
La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 (RRUFF)
Locality
Pandora prospect, Quijotoa dist., Pima County, Arizona, United States
Tagged
REE mineral

Black vitreous or "pitchy-lustered" grains of Davidite to 1.4cm. Very rich specimen. The Davidite is metamict and was formed in a transitional contact zone between a metaspessartine dike and a quartz monzonite (Mineralogy of Arizona, Anthony et al).

Davidite contains the rare earth elements lanthanum, cerium, and yittrium. Lanthanum, discovered in 1839, was first used in gas lantern mantles. Coleman still uses it in their mantles. Massive quantities of lanthanum is required for the production in hybrid automobiles. A typical battery used in a Toyota Prius requires 22-33 lbs of lanthanum.

Radioactive!!

Davidite-(La)

Formula
La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 
Crystal System
Trigonal 
Crystal Habit
Massive, Anhedral Grains, Metamict 
Cleavage
None, None, None 
Luster
Vitreous - Metallic 
Color
black, grayish black, brownish black, dark brown, reddish 
Streak
brownish black 
Class
Trigonal - Rhombohedral 
Fracture
Brittle - Conchoidal 
Hardness
6 

Data courtesy of Webmineral.

Collection
Bill Wilson Collection
Special Info
Radioactive!!
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