Orthoclase

  

Variety adularia

Origin: Skardu Road, Gilgit, Northern Areas, Pakistan

Sample size: 11.7 x 9.7 x 4.4 cm

 

  

Right crystal with Carlsbad twin

Origin: Robinson Gulch Pegmatite, Jefferson Co., Colorado, U.S.A.

Sample size: 4.5 x 2.7 x 1.8 cm (largest)

 

  

  

Origin: Itrongay, Betroka Dept., Madagascar

Ex. Irv Brown collection

Sample size: 1.6 x 1.1 x 1.0 cm

 

     

Variety adularia

Origin: Graubunden, Switzerland

Sample size: 7.5 x 5.4 x 5.1 cm

 

  

Orthoclase with smoky quartz and epidote

Origin: Baveno, Piedmont, Italy

Sample size: 4.6 x 4.1 x 3.1 cm

 

Orthoclase pseudomorph after leucite

Origin: Oberwiesenthal, Germany, in the Erzgebirge, near the border between Bohemia, Czech Republic, and Obersachsen, Germany

Sample size: 6.4 x 5.7 x 5.5 cm

 

  

  

Orthoclase included with chlorite

Origin: Val Christalina, Switzerland

Ex. A.N. Goddard collection

Sample size: 11.5 x 8.5 x 7.2 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone