Definitions

from The Century Dictionary.

  • noun A basic copper arsenate occurring in green mammillary crystalline forms: from Cornwall, but earlier supposed to come from Ireland, hence the name.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) A hydrous arseniate of copper, of an emerald-green color; -- so called from Erin, or Ireland, where it occurs.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A hydrous copper arseniate of an emerald-green colour.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Erin +‎ -ite, referring to Ireland, where it occurs.

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Examples

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