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Photographic gallery.  Thousands of particles under the microscope.

Transition Metals Colors

3d Electrons Colors

. . . Copper

3d Electrons Colors 3d Electrons Colors 3d Electrons Colors 3d Electrons Colors 3d Electrons Colors 3d Electrons Colors 3d Electrons Colors

. . . Iron

Hematite Hematite Hematite Sphere Hematite Sphere Limonite Rust

. . . Nickle

3d Colors 3d Colors 3d Colors 3d Colors

. . . Cobalt

3d Colors 3d Colors 3d Colors 3d Colors

. . . Chromium

3d Colors 3d Colors 3d Colors