Santabarbaraite Ps. Vivianite
Small Cabinet, 7.0 x 6.5 x 4.5 cm
Kerch, Crimea, Ukraine
Ex. Martin Zinn
It is easy to discern that these were once vivianite crystals by their bladed nature, some doubly terminated and 3.0 cm in length. They are now turned to a burnt-umber color by santabarbaraite, a rare hydrated iron phosphate. A truly unusual pseudomorph! Very few of these were recovered in a series of phosphate pods mined through in the 1990s. I have seen several dozen good Santabarbaraite specimens out of LITERALLy thousands of vivianites and dozens of specimens of anapaite from here. This is, truly, uncommon. And, best of species, I am told.