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Pronunciation varies by accent · noun
(mineralogy) A trigonal-hexagonal scalenohedral black mineral containing iron, niobium, oxygen, tantalum, and uranium..
Use petscheckite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Petscheckite means (mineralogy) A trigonal-hexagonal scalenohedral black mineral containing iron, niobium, oxygen, tantalum, and uranium..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use petscheckite where its definition matches the intended context.
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