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Banded gneiss with melt vein in a shear band. Yarweelor Gneiss (reworked Yilgarn gneiss – protolith 3.7-2.4 Ga)

Banded gneiss with melt vein in a shear band. Yarweelor Gneiss (reworked Yilgarn gneiss – protolith 3.7-2.4 Ga)

Photograph: Cees Passchier