NW904 Ordinary Chondrite. Pyroxene Chondrule.

Pyroxene chondrule in NW904 meteorite. The section is close to 0.1 mm thickness as can be seen on the second picture below taken between crossed polars. The pyroxene chondrule shows first to second order birefringence colors.

Spectra below were recorded on the chondrule marked by the arrow. The intense absorption of ortho pyroxene at 920 nm is well developed. The strong pleochroism of the pyroxene is not visible because it is only present above 800 nm. It could be photographed with a NIR camera.