最終更新日：2025/11/26
The museum's mineralogist carefully examined a specimen of plumbopyrochlore, an isometric-hexoctahedral mineral containing calcium, hydrogen, iron, lead, niobium, oxygen, silicon, tantalum, uranium, and yttrium.
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The museum's mineralogist carefully examined a specimen of plumbopyrochlore, an isometric-hexoctahedral mineral containing calcium, hydrogen, iron, lead, niobium, oxygen, silicon, tantalum, uranium, and yttrium.
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