Psilomelane (manganese oxide) dendrites. Magnification 20x.
Botryoidal Psilomelane. Magnification 20x.
A Psilomelane seam around siltstone breccia with Calcite infill. Magnification 20x.
Psilomelane (manganese oxide) dendrites. Magnification 20x.
Botryoidal Psilomelane. Magnification 20x.
A Psilomelane seam around siltstone breccia with Calcite infill. Magnification 20x.