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：2025/11/26
natroniobite
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(mineralogy) A monoclinic mineral containing niobium, oxygen, and sodium.
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natroniobite
The mineralogist carefully examined a sample of natroniobite under the microscope to determine its crystal habit and composition.
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The mineralogist carefully examined a sample of natroniobite under the microscope to determine its crystal habit and composition.
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