Theisite

  
 
  
Outstanding turquoise-green single pseudohexagonal platy crystals to 0.5 mm that also form rosette like aggregates with a pearly luster. The single crystals are much like micro chalcophyllite crystals, while the aggregates look a little like parnauite.
Origin: Tuckers Tunnel, Hinsdale Co., Colorado, United States
Sample size: 7 x 4 x 4 cm (top),
 
  
Origin: Falkenstein, Schwaz, Tirol, Austria
Sample size: 5 x 4 x 2.5 cm
 
  
Pearly, light green micro crystals flat lying to 0.1mm on quartz matrix.
  
Light green micro spheres of thesite to 0.3 mm in diameter
Origin: San Juan Mountains, near Durango, Colorado, United States
Sample size: 3 x 2 x 2 cm (top), 4.5 x 3 x 2 cm (bottom)
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Bluegreen radiating aggregates with linarite and others
Origin: Neufinkenstein, Grabanz, Kärnten, Austria
Sample size: micromount
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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