Feklichevite

Brownish to purplish-brownish crystal of feklichevite
Origin: Kovdor Mine, Kovdor massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Picture size: 6 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

  
 
Lilac-violet grains replacing eudialyte. The eudialyte occurs as a primary magmatic mineral, which was subsequently replaced. Most of what you see is a mixture of eudialyte, albite, feklichvite and other unidentified minerals (potentially-new species of the same eudialyte group. Holotype specimen.
Origin: Phlogopite mine, Kovdor, Kola Peninsula, Russia (type locality)
Sample size: 3 x 3 x 2 cm with a large 10 x 6 mm, deep reddish brown crystal (top), 1.5 x 1.5 x 1 cm (bottom)
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Redbrown 1.5 cm tabular feklichevite crystal in K-feldspar-cancrinite matrix
Origin: Kovdor Mica Quarry, Kola Peninsula, Russia (type locality)
Sample size: 2 x 3 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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