Vivianite Mineral Data

General Vivianite Information
Chemical Formula:	Fe++3(PO4)2•8(H2O)
Composition:	Molecular Weight = 501.61 gm
	Iron 33.40 % Fe 42.97 % FeO
	Phosphorus 12.35 % P 28.30 % P₂O₅
	Hydrogen 3.22 % H 28.73 % H₂O
	Oxygen 51.03 % O
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	Fe²⁺₃(PO₄)₂•8(H₂O)
Environment:	Common secondary mineral in the gossan of metallic ore deposits, pegmatites, sedimentary authigenic mineralization in association with organic materials.
IMA Status:	Valid Species (Pre-IMA) 1817
Locality:	St. Agnes, Cornwall, England Link to MinDat.org Location Data.
Name Origin:	Named after the English mineralogist, J. G. Vivian.
Name Pronunciation:	Vivianite + Pronunciation
Synonym:	Blue Iron Earth
	ICSD 200703
	PDF 30-662