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Pronunciation varies by accent · noun
(mineralogy) An orthorhombic mineral containing copper and tellurium..
Use rickardite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Rickardite means (mineralogy) An orthorhombic mineral containing copper and tellurium..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use rickardite where its definition matches the intended context.
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