South Dakota fluorescent fossil ammonites

Many of the fossils, as well as minerals, from South Dakota will fluoresce due to the replacement of the fossil by calcite and chalcedony.

The calcite will fluoresce from white to yellow to orange. The chalcedony usually shows up as a green fluorescence. Usually the stronger

fluorescence is under long wave and is the first photo shown in the fluorescents (South Dakota) section of the web site. Chalcedony

usually does not fluoresce well under long wave, but does fairly well for the fossils from this area.

Most of the specimens below are also available in the fossil section. It will have the same item number followed by an "N."

Due to limitations of the web site software we are unable to show each of the minerals available under normal light, long wave ultraviolet

light, and short wave ultraviolet light.  We will attempt to compensate for this short coming by providing a link to another page below which

will give you photographs of similar specimens under the three lighting conditions.

We are limited to using only two photographs for the individual specimens being offered for sale.  The first one you see will be the one

which offers the strongest fluorescence.  Whether it is long or short wave will be indicated in the discussion of the specimen at the lowest

level (after you click on the image or the product name).  If only one type of light will fluoresce the specimen or a second fluorescent image

is not available, then a photo of the specimen in normal light will be used at the lowest product level.

To view specimen material from South Dakota.