Phosphophyllite

  
  
 
  
  
Origin: Unificada Mine, Cerro Rico, Potosi, Potosi Dept., Bolivia
Sample size: 1.8 x 1.1 x 0.4 cm (top/2nd row), 2.5 x 1.9 x 0.9 cm (3rd/bottom row)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
  
Light bluish twinned cyrstals about 1 to 1.5 mm and are associated with straw coloured strunzite.
Origin: Hagendorf Nord pegmatite, Bavaria, Germany
Ex. Westenberger collection
Sample size: 5 x 4 x 4 cm
 
  
Light bluish green, clear and glassy, twinned Phosphophyllite crystals to 1-2 mm in vuggy matrix. Associated with minor schoonerite.
  
Light green embedded crystal with no faces within matrix covering a 6x5mm area associated with an unusual copper red, straw-like schoonerite. I don't think it's possible to distinguish between the schoonerite, beraunite and strunzite with the eye. I'm going by the label and was told these have all been verified XRD.
Origin: Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany (type locality)
Sample size: miniature (top/2nd row), 4.5 x 2.5 x 2 cm (3rd/bottom row)
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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