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Orbicular granite (also known as orbicular rock or orbiculite) is an uncommon plutonic rock type which is usually granitic in composition. These rocks have a unique appearance due to orbicules - concentrically layered, spheroidal structures, probably formed through nucleation around a grain in a cooling magma chamber. Almost one third of known orbicular rock occurrences are from Finland. The occurrences are usually very small.

Orbicular granite, an unusual type of granite, near the town of Caldera, northern Chile


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Mufik Mujoo said... May 28, 2014 at 2:33 PM

i want that rock in my garden

Alao ALAO Tope said... November 30, 2014 at 11:42 PM

wow, what an amazing rock!

 
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