Utah fluorescent minerals

      The specimens shown at right are dinosaur bone from the Yellow Cat area of Utah. The bone is from the Jurassic and is 146 to 195 million years old.  The specimens are a white to light tan or brown in normal light.   The specimens are reflecting the ultraviolet lights in the purple areas of both the long and short wave light photos.  The yellow color fluoresces stronger under the long wave light than the short wave light.  The yellow fluorescing mineral is possibly uranium.  Uranium fluoresces yellow under both long and short wave and is known to be found in the Yellow Cat area.

       The bone slab, in row three, is also from the Yellow Cat area of Utah.  The white fluorescing mineral under the long wave UV light is likely calcite.  The purple color under both lights is the reflection of the fluorescent lights off the light colored areas of the slab.  The green fluorescence in the third image is chalcedony.




Regular lighting

Regular lighting

Regular lighting

 

 

 

 

 

 

 

Long wave ultraviolet light

Long wave ultraviolet light

Long wave ultraviolet light

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Short wave ultraviolet light

Short wave ultraviolet light

Short  & long wave ultraviolet light