Keiviite

Colourless to whitish tiny keiviite-(Yb) crystals on purple yttrofluorite
Origin: Keiva, Ploskaya Mountains, Kola Peninsula, Russia (type locality)
Sample size: 1.6 x 3 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

  
Yellowish to white grains embedded in matrix.
Origin: Keivy Massif, Kola Peninsula, Russia (type locality)
Ex. Kidwell and Fersman Museum collections
Sample size: 3 x 2.5 x 1.5 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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