dontom Posted June 16, 2016 Share Posted June 16, 2016 Hi I've got one more for you guys today. Thanks for all the help so far. I was wondering if the reddish brown ammonite plate in the pics looks like it has been enhanced with some kind of lacquer or if those colors are from how it naturally fossilized? Do you think it looked similar to the grayish plate to the right of it at one time and was then coated? Sorry in advance for the pics. These are the best ones I currently have because these items are in storage right now. Link to comment Share on other sites More sharing options...
dontom Posted June 16, 2016 Author Share Posted June 16, 2016 One more pic. It was too big to add to the first post. Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 16, 2016 Share Posted June 16, 2016 There appears to be some original ammolite on some of the ammonites in the first plate, but I would say that it has been coated in some way, to look shiny on the matrix like that. Tim - VETERAN SHALE SPLITTER VFOTM - APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
DPS Ammonite Posted June 16, 2016 Share Posted June 16, 2016 The reddish brown ammonite plate has been coated with something to hold it together. Note that both the matrix and the ammonites are very shiny. The coating is not so bad as it probably holds the rock together. My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Johannes Posted June 16, 2016 Share Posted June 16, 2016 The plate is sealed with some kind of coating, to stabilise the ammonite shells and to refresh the shining of the pearl, which is not so colourful preserved originally. And: please do not call it "ammolite". This term is, as far as I know specific (meaning undefined but in some areas a commonly used name) to pearl (aragonite) impregnated with lead and zinc sulfides and only found in two (three?) sites worldwide. And, from my point of view, it should not be used generally, because it is nearly the same like all these unspecific non defined terms and fantasy names for some color versions of some minerals, invented by traders to push up the prices. Link to comment Share on other sites More sharing options...
Ludwigia Posted June 16, 2016 Share Posted June 16, 2016 Those ammonites are Psiloceras planorbis from the lower Hettangian, planorbis zone at Blue Anchor Bay, Watchet, Somerset, England, the only place in the world to my knowledge where they can be found in this type of preservation. The mother of pearl is preserved which accounts for the iridescent colors, but it is not ammolite, as Johannes has pointed out. The plate on the left has been thickly coated with laquer, which disturbs the natural preservation, which can be seen well on the plate on the right. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
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