Trent Sagenite Agate Slabs

A deposit of unique agate was found near Trent, Oregon, in the sixties. The black mineral that gave rise to the psuedomorphs is stibnite, a sulphide of antimony. At times the stibnite has altered to yellow orpiment or red realgar. The specimens below will give you a good idea of what a remarkable ledge agate it is.

The farmer who owned the land let rockhounds come onto his property to mine the material. Legend has it that one of these fortunate diggers was injured in a cave in and then proceeded to sue the farmer. End of mining on that property! Now there is a freeway over the area so there won't be any digging in the near future in any case.