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RM3649   Chevkinite-(Ce)
Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
  -  9. Silicates

An amazing sized specimen of the rare REE silicate chevkinite-(Ce) from the finest discovery in the world for the species. This obscure Pakistan locality started producing these superb specimens in the late 1990s. This group hosts rather lustrous, sharp, euhedral, jet-black terminated crystals measuring up to 4.5 cm on chevkinite-(Ce) matrix. From A. Petrov.  

Size: 5.3 x 4.7 x 4.2 cm.
Main crystal: 4.8 x 3.6 cm.
Presents radioactive activity.
Reserved