Evansite w/ Doyleite - 2016 find

Item Description

Yellow-green Doyleite richly covers one side of the bright, rich sky-blue bubbly botryoids on this very colorful and sculptural lightweight two-sided crust from a recent 2016 find. The blue botryoids were incorrectly identified as gibbsite, an Al-oxide and very uncommon, worldwide. Doyleite is a polymorph of Gibbsite. Polymorphs are two or more minerals that contain the same chemical composition, but differ in their atomical arrangement and crystal structure. Testing has proven, that the Gibbsite is actually Evansite, a RARE hydrated Al-phosphate. See: https://www.mindat.org/mesg-432327.html#434179. This is an extremely fine, aesthetic and uncommon example of the combination species from a small recent find. Gorgeous, unusual, and interesting!