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vivianite

[viv-ee-uh-nahyt] /ˈvɪv i əˌnaɪt/
noun
1.
a secondary mineral, hydrous ferrous phosphate, Fe 3 (PO 4) 2 ⋅8H 2 O, occurring in the form of pale blue crystals or powder.
Origin of vivianite
1815-1825
1815-25; named after J. G. Vivian, 19th-century English mineralogist, who found it; see -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for vivianite
  • vivianite is unusual in that, the mineral will turn blue as a result of partial oxidation.
  • These particles, composed of phosphate and iron, may be the mineral vivianite.

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