Ralstonite

Octahedral ralstonite with prismatic crystals of thomsenolite
Origin: Ivigtut (Ivittuut), Arsuk Fjord, Greenland
Picture size: 5 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

Brown ralstonite in weberite and prosopite
Origin: S.E. of Texas Creek, Fremont Co., Colorado, U.S.A.
Sample size: 3 x 5 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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