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Soudan, Minnesota 55782
(Photos)
Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 10
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 1
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 2
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 3
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 4
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 5
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 6
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 7
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 8
Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 1
Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 2
Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 3
Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 4
Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 5
Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 6
Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 7
Specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 8
Specularite & reddish hematite dust-covered specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; ceiling of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 1
Specularite & reddish hematite dust-covered specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; ceiling of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 2
Specularite & reddish hematite dust-covered specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; ceiling of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 3
Specularite & reddish hematite dust-covered specularite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; ceiling of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 4
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 24
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 25
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 26
Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; wall of stope at the 27th level of the Soudan Mine, Soudan, Minnesota, USA) 27
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