Londonite

  
 
Origin: Antsomgombato, Mahaiza Province, Madagascar
Sample size: 5 x 5 x 3 cm, crystal 1.5 x 1.4 x 1.2 cm
 
  
 
  
  
Origin: Antandrokomby Pegmatite, Antananarivo Province, Madagascar
Sample size: 4.2 x 3.7 x 2.9 cm (top/2nd row), 3.0 x 3.0 x 2.2 cm (3rd/4th/bottom row)
 
  
 
  
 
 
  
Origin: Antsongombato, Betafo Region, Madagascar
Ex. David London collection
Sample size: 4.9 x 3.2 x 2.2 cm (top), 6 x 4.8 x 4.1 cm (2nd row), 2.6 x 1.7 x 1 cm (3rd row), 7 x 3.3 x 3 cm (bottom)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

Origin: Antandrokomby pegmatite, Antandrokomby, Manandona Valley, Sahatany Pegmatite Field (Mt.Bity (Ibity) area), Vakinankaratra region (Betafo - Antsirabé region), Antananarivo Province, Madagascar
Sample size: 7 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

  
Yellow blocky crystals of londonite to 1 cm in size set upon a matrix invested by small purplish red elbaite.
Origin: Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo Department, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar
Sample size: 4.3 x 1.8 x 4.4 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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