Syenite rocks containing fluorescent sodalite ( also known as "yooperlite")

The sodalite will fluoresce orange under UV light

📹 greatlakesrockhounds

https://t.co/5fJK3jQSwV https://video.twimg.com/ext_tw_video/1695389174054965248/pu/vid/720x1280/2bPluI0YWVeAHpzc.mp4?tag=12