from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An orthorhombic-dipyramidal mineral containing boron, iron, magnesium, and oxygen.

from the GNU version of the Collaborative International Dictionary of English

  • n. A borate of iron and magnesia, occurring in fibrous masses of a blackish green color.

from The Century Dictionary and Cyclopedia

  • n. A borate of iron and magnesium, occurring in dark-green to black masses with a fine fibrous structure.


-ite (Wiktionary)


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