We have run out of stock for this item.
*Note: Please make sure to right-click and print (or save) ID card located in the photo gallery for your records*
Large and bright piece of fluorescent sodalite from Greenland. The bluish area displays some interesting phosphorescence – we don’t usually see this in pieces with Greenland sodalite. Very unique stuff.This piece is a very bright piece under shortwave, midwave and longwave UV light. The longwave fluorescence is knock-your-socks-off bright. The blue could likely be analcime.
This sodalite on this specimen has some tenebrescence as shown in the animated GIF below.
They were nicknamed "Yooperlites" which is derived from the name “yooper”. A yooper is a nickname for the Upper Peninsula natives and these fluorescent stones quickly gained fame. After data was published on these fluorescent stones, it was discovered that sodalite is the actual true mineral that is fluorescing orange.
365nm UV light is often called "blacklight". Before the advent of longwave UV LEDs, blacklight fluorescent tubes, (the kinds used in hippie days to light up psychedelic posters) were the standard longwave UV light for our hobby. They were not very powerful but they did light a large area.
Enter 365nm UV LEDs
First, an animation showing the difference between the UV flashlight we recommend (365nm filtered UV flashlight) versus unfiltered 395nm UV flashlights we see many folks carrying around at shows. So. much. visible purple light. We selected a bunch of rocks as a demonstration. Took pictures of them under his flashlight without the filter and then with the filter.
