Fluorescence Chlorite Apatite section.

      Raman spectra of this section can be found here.

The fluorescence appears at the frontier between dark and clear regions in this section.

 

Other view of this section, reflection illumination with the 405nm laser.

The yellow fluorescence appears at the rim of dark areas. Some blue fluorescence is also visible.

 

Composite view: white light transmission + 405nm laser illumination.

 

White light illumination of the same section.

The blue fluorescent regions appear very dark with this illumination.

 

Same section between crossed polarizers.

The blue fluorescent areas are dark thus not birefringent.

 

Yellow-orange fluorescence spectrum.