Goethite

Goethite, polished, Mesabi Range, Virginia, Minnesota
Sample 399

Geothite(golden glint), Montreal, Wisconsin
Sample 485

Needle Ore-Goethite, Montreal, Wisconsin
Sample 486

Geothite, Virginia, Minnesota
Sample 2786

Groutite

Groutite, Cuyuna Range, Minnesota
Sample 2836

Limonite

Limonite, Aurichalcite, Hemimorphite, Sphalerite, Oaxoca, Mexico
Sample 504

Limonite Geode

Limonite Geode with Aurichalcite, Calcite, Planerite, Black, Mexico
Sample 429

Psilomelane

Psilomelane, Northern Michigan
Sample 2852