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Pronunciation varies by accent · noun
(mineralogy) A monoclinic-prismatic light blue mineral containing carbon, hydrogen, nickel, and oxygen..
Use hellyerite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Hellyerite means (mineralogy) A monoclinic-prismatic light blue mineral containing carbon, hydrogen, nickel, and oxygen..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use hellyerite where its definition matches the intended context.
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