290. Allanite-(Ce). Crystaline

Dana number

58.2.1a.1

Chemical formula

(Ce,Y,Ca)2(Fe2+,Fe3+)Al2(SiO4)(Si2O7)(O)(OH)

Crystal class

Monoclinic

Mohs hardness

5-6.5

Specific gravity

3.4-4.2

Collected in

El Capiton Mine, New Mexico, United States

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