CompuServe Messages

Hi, Jerry– Welcome back! I have not seen any of these limonite-after-pyrite specimens, but I remember passing on a club field trip where the expected prize was limonite pseudomorphs after pyrite. It was too ambitious a trip for something non-fluorescent – perhaps it was the Saline Valley in Calif.? My recall of this one is faded; sometimes I think UV photons erase data from my memory as they do with EPROMs. Limonite would be a natural result of pyrite oxidation, thus I am now wondering why I have never seen such things. Maybe most of the time the limonite is too crumbly and is washed away? I sort of expect limonite to be rusty or brown colored. Black and cohesive puts me more in mind of goethite. How do you tell the difference? Don't be "lost" so much! –Doug