Preisingerite

Olive-greenish crystals of preisingerite on quartz
Origin: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany
Picture size: 5 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

Origin: Moldava, Czech Republic
Sample size: 2.5 x 2.5 x 2 cm with powdery crust
 
  
Yellow earthy coatings or crusts
  
White, pearly very micro crystals to less than 0.1 mm, almost as an earthy powder coating associated with yellow tetrarooseveltite.
Origin: Moldava, Teplice, Erzgebirge, Czech Republic
Sample size: 2.5 x 2 x 1.5 cm (top), 3 x 2 x 1 cm (bottom)
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

 
Small light green-yellow flakes in association with bismutite (analysed)
Origin: Grube Clara, Oberwolfach, Schwarzwald, Germany
Sample size: micromount (top), thumbnail (bottom)
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

  
Origin: Pucher Shaft, Schneeberg, Germany
Ex. Mark Feinglos collection
Sample size: 6.5 x 4.5 x 3.2 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

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