Roger Weller, geology instructor
firstname.lastname@example.org copyright 2010-R.Weller
Vivianite is a hydrous iron phosphate. It has a pearly luster and on exposure to
light turns blue or green. In thin pieces it is flexible.
Photo is copyright free only for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen courtesy of Hewin's Minerals
Dale P. Hewin
48770 W. Cheetah St., Tucson, Arizona 85742