As might be expected, NWA 2798 L3.2 contains large, well defined chondrules and dark matrix. It also displays quite a variety of barred olivine features – coarse and fine, simple and otherwise.
These thin section photos are from just two slides. The first six are from one and are all at the same scale with the fields of view 3.1 mm wide. The remaining ten are from the other slide and are at several scales. Please see captions for chondrule sizes or their FOV. All thin section photos are in cross polarized light.
For the record, there is no such thing as “cross polarized light.” “In cross polarized light,” and similar spellings, is shorthand for the procedure when linear polarized light is shown through a transparent or translucent substance and the transmitted light is viewed through a linear polarizing filter that is oriented at a right angle to the polar orientation of the source light. Other terms for this are “using crossed Nicols,” “with analyzer in,” “xpols” and “XPL.”
