Orbiculite

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Description:

Orbiculite from W-Australia - can be visited in opposite of the holocaust memorial in Tiergarten. Maybe the oldest exposed rock in Berlin - older than 2 billion years. See also www.globalstone.de/ comes from near Mount Magnet in Western Australia. The orbicules occur in a granodiorite matrix. They consist of andesine, plagioclase, hornblende & biotite arranged radially around a core of plagioclase &/or hornblende or less commonly mafic schist.

Credit:

Mario Wipki , GFZ Potsdam , Potsdam - Germany

Other images by this photographer (2 images)

When:

Taken on Ιανουάριος 1, 2008 and submitted on

Sections:

Geochemistry petrology mineralogy volcanology (16 images)

Camera:

Canon

Model:

D350

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