Detail of K-feldspars pegmatite-like vein on the Kopparnäs coastline, Finland.
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Detail of K-feldspars pegmatite-like vein on the Kopparnäs coastline, Finland.

by Sophie Graul, Tallinn University of Technology, Tallinn, Estonia and France

Detail of K-feldspars pegmatite-like vein on the Kopparnäs coastline, Finland.