This is cool. I'd never heard of them. I guess they may also be called "glowdalites".
Ever seen or found any? I guess you need to use a UV light source.
"These glowing rocks are known as Yooperlite, they are actually Syanite rocks rich in fluorescent Sodalite. They can be found mostly on Lake Superior. "
apparently, you've got to have the right UV light.
__________________
Steve
'08 Boxster RS60 Spyder #0099/1960
- never named a car before, but this is Charlotte.
'88 targa
SOLD 2004 - gone but not forgotten