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Showing results for tags 'ultra violet'.
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The following are some fossils I found by Tampa Bay Florida. I'm not really looking for info on the low grade fossils. I was hoping for help determining the red /orange mineral under shortwave 254nm UV light that does not show up using 365nm longwave. White or off white under white light. The last picture are slices to show it can run through the piece of rock.
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On my last trip a couple of months back one of the people I talked to told me the fossils from one area are fluorescent. So when I got home I purchased a light bulb and then a UV torch and started looking at some specimens. The torch worked better and sure enough some specimens gave off orange, yellow and green. Most specimens gave orange, particularly where crystals were evident in ammonites. I could not get a decent photograph myself but a friend experimented with one piece and the end photograph shows the actual colour seen. Next trip I will try a night fossick. below is a section of wood that has been mostly replaced with crystal. Does any one else have fluorescent fossils? Mike
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- florescence
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