Boehmite

Flattened dipyramidal crystals up to 1 mm in length, usually in intergrown aggregates, in vugs in fibrous natrolite
Origin: Saga 1, Tvedalen, Norway
Sample size: micromount
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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