Definition of millerite in English:

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Pronunciation: /ˈmɪlərʌɪt/


[mass noun]
A mineral consisting of nickel sulphide and typically occurring as slender needle-shaped bronze crystals.
Example sentences
  • The day before the Main Show opened, the phone call came that the crystals were indeed millerite!
  • Associated minerals in the high-grade veins are calcite, ‘smaltite,’ nicoline, bismuth, and lesser pyrargyrite, proustite, acanthite, millerite, and chalcopyrite.
  • The sphalerite is dense enough on some specimens to be considered a crust, whereas on others there is just the right ratio of sphalerite to millerite to create truly beautiful specimens.


Mid 19th century: named after William H. Miller (1801–80), English scientist, + -ite1.

For editors and proofreaders

Line breaks: mil¦ler|ite

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