sharing our knowledge.
Photographic gallery.  Thousands of particles under the microscope.

Pleochroism

Crocidolite
Crocidolite Crocidolite

Hornblende
Hornblende Hornblende Hornblende Hornblende

Tourmaline
Tourmaline Tourmaline Tourmaline Tourmaline Tourmaline Tourmaline

Olivine
Sand, North Jetty Ocean Shores Sand, North Jetty Ocean Shores Sand, North Jetty Ocean Shores Sand, North Jetty Ocean Shores