from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A blue, green or colourless mineral of monoclinic crystals, Fe3(PO4)2·8H2O.

from the GNU version of the Collaborative International Dictionary of English

  • n. A hydrous phosphate of iron of a blue to green color, growing darker on exposure. It occurs in monoclinic crystals, also fibrous, massive, and earthy.

from The Century Dictionary and Cyclopedia

  • n. In mineralogy, a hydrous phosphate of iron protoxid, occurring crystallized, also cleavable, massive, fibrous, and earthy, nearly colorless when altered, but on exposure becoming blue or green.


from Wiktionary, Creative Commons Attribution/Share-Alike License

Named after its discoverer English mineralogist J. G. Vivian in 1817.


  • Bone ash (made from calcining animal bones), apatite, wavellite, vivianite.

    13. Glaze oxides


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  • "Lined up against the wall was a row of exactly one hundred tusks of various sizes and colors—from pale white to reddish brown to bluish, a patina laid down by the mineral vivianite—that had been collected the previous summer."

    —Richard Stone, Mammoth: The Resurrection of an Ice Age Giant (Cambridge, Mass.: Perseus Publishing, 2001), 203

    September 22, 2008