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.


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


  • 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