Chuck,
Thank you for the baggie of NWA 869 slices. I’ve gone through them all at least twice with a 10X loupe. I found a few interesting things to show you. Some of them we talked about last time. I have to admit that it took me a while to make some of these pictures. Metal and other shiny things have to have the light just right. The first few here, though, were pretty straightforward.








Reminder:
Troilite FeS
Pyrite FeS2
Pentlandite (Fe,Ni)9S8

– John