Estherville, Iowa Mesosiderite 3A/4A. This meteorite fell May 10, 1879.

This set was taken at a magnification of 345X NEO. This is a covered thin section and I usually reserve incident (reflected) light work for polished (uncovered) thin sections. I have been experimenting with setting up my Neophot with a Glan-Thompson style polarizer. These are made of mined calcite and their extinction is near total. This allows me to better control the glare and take a reflected light image through a cover glass. The bounce back light off the slide it's self gives some Xpol color. I was trying to capture the details of opaque material. After all, it is a Mesosiderite and there is plenty.

Once again, a great thin section from Jeff Hodges. I had just about given up on some cool Meso shots then Jeff sent me this slide.