Minerals / Vivianite, Ukraine.
Vivianite, Fe2+3(PO4)2 .8H2O is a hydrated iron phosphate mineral. The specimen is composed of radiating dark stellate crystals of vivianite with a hint of dark blue, which are mounted on a rock which also has botryoidal manganese oxides. The specimen is from the Kerch iron-ore basin, Eastern Crimea, Ukraine.
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