Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A greenish-grey variety of muscovite.

from the GNU version of the Collaborative International Dictionary of English

  • n. A mineral occurring in greenish gray six-sided prisms, having a greasy luster. It is probably a pseudomorph after elæolite.

from The Century Dictionary and Cyclopedia

  • n. A mineral occurring in hexagonal prisms of a greenish-gray or brown color.

Etymologies

Giesecke +‎ -ite, after Karl Giesecke. (Wiktionary)

Examples

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