Schmiederite

 
Origin: Llechwedd Helyg (Willow Bank) Mine, Pen-bont Rhydybeddau,Trefeirig , Ceredigion (Dyfed; Cardiganshire), Wales, UK
Sample size: masses to 1 mm (top), 0.5 mm balls on quartz (bottom)
Owner: Steve Rust
 

Photo courtesy of: 

Steve Rust

 

  
  
Sky blue, slender prismatic or fibrous crystals to about 0.1 mm and as a replacement of galena(?).
Origin: Greystone quarry, Cornwall, England
Ex. Kidwell collection
Sample size: 2 x 2 x 2 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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