Metamorphic Geology of Leornian

Unit: A12

image MS-01

full-size image

Augen gneiss. "Augen" is German for "eye" and refers to the eye- or lens-shaped white feldspar crystals. Note that the augen are clearly segregated from the matrix which is darker.

  • What might the augen have been, before the rock was metamorphosed?

Scale: coin (circled) is 20 mm in diameter.

Grid reference: 974 233

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This page is maintained by Roger Suthren

Last Modified: 23 October, 2008