Alumohydrocalcite

Spherical aggregates of white alumohydrocalcite crystals on matrix
Origin: Steinburch Kalem, Birresborn, Eifel, Germany
Sample size: 1 x 2 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

  
Fine micro white crystals, compact and indiscernible
Origin: South Bay, Scoroborough, Yorkshire, England
Sample size: 4 x 2 x 1 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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