Manganese Oxide Lecture; Part 4, Dendrites.     Back to part 3

A gallery of Manganese Dendrites

These are often (and incorrectly) called pyrolusite dendrites
From Malpais Hils, Arizona.
Image from:  Roberts, Rapp, Weber, Enclycopedia of Minerals


From southwestern USA
 

SEM image
30 micrometers full width (taken at 1300 magnification)
 


From South Dakota, USA
 


From an underground tourmaline mine at Pala, California, USA
 


From Afton Canyon, near Barstow, California, USA

 Back to part 3 (structures)      Forward to part 5 (manganese nodules)