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Definition of Guilleminite
1. Noun. (minerology) An orthorhombic-pyramidal mineral containing barium, hydrogen, oxygen, selenium, and uranium. ¹
¹ Source: wiktionary.com
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1. Noun. (minerology) An orthorhombic-pyramidal mineral containing barium, hydrogen, oxygen, selenium, and uranium. ¹
¹ Source: wiktionary.com