“silver-grey matildite xls in chalkopyrite and minor pyrrhotite (upper left side of the pic)
In Coll. M. Slama (ex Coll. Gerald Gesselbauer)
Canon EOS 600D with Canon MP-E 65mm f/2.8 1-5x, stacked from 28 Images using Zerene Stacker (Dmap)”
Martin Slama - 6th February 2018