Roger Weller, geology instructor
fluorescent pair- 7
The first view is a mineral
observed under normal light,
while the second is the same mineral viewed under ultraviolet light.
The mineral that fluoresces a bright whitish blue is probably scheelite.
Photos are copyright free for non-commercial educational uses.
Just credit photos to R.Weller/Cochise College.
Specimen courtesy of the Huachuca Gem and Mineral Club