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Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.69 Ga; ceiling between No. 8 elevator shaft & stope, 27th level of the Soudan Mine, Soudan, Minnesota, USA) 2 (19032277481).jpg - Natuur12
Polymict conglomerate (Ogishkemuncie Conglomerate, Neoarchean; Ogishkemuncie Lake, Boundary Waters, Minnesota, USA) 3 (22134788499).jpg - Ser Amantio di Nicolao
Migmatite (Archean, ~3.4 to 3.5 Ga; Minnesota, USA) 1 (22915182614).jpg - Ser Amantio di Nicolao
Migmatite (Archean, ~3.4 to 3.5 Ga; Minnesota, USA) 2 (23434889782).jpg - Ser Amantio di Nicolao
Migmatite (Archean, ~3.4 to 3.5 Ga; Minnesota, USA) 3 (23517332506).jpg - Ser Amantio di Nicolao
Migmatite (Archean, ~ 3.524 Ga; Minnesota, USA) 1 (49156025601).jpg - Ser Amantio di Nicolao
Migmatite (Morton Gneiss Complex, Archean, ~3.524 Ga; Cold Spring Granite Company quarry, Morton, Minnesota, USA) 2 (40134740810).jpg - Ser Amantio di Nicolao
Migmatite (Morton Gneiss Complex, Archean, ~3.524 Ga; Cold Spring Granite Company quarry, Morton, Minnesota, USA) 3 (41897958622).jpg - Ser Amantio di Nicolao
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