Orbiculite

Mario Wipki

GFZ Potsdam, Potsdam, Germany

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Orbiculite from W-Australia - can be visited 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.

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Location

Oceania Australia and New Zealand Show on map

Properties

Type Image Format JPG Size 6.4 MB Width 3456 px Height 2304 px Aspect 3:2 Brand Canon Model D350 Exposure 50 mm f/6.3 1/100 s ISO 100 Coordinates -28.0611, 117.8517 Tint Medium gray Submitted 10 January 2010