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Definition of Geigerite
1. Noun. (minerology) A triclinic-pinacoidal mineral containing arsenic, hydrogen, manganese, and oxygen. ¹
¹ Source: wiktionary.com
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1. Noun. (minerology) A triclinic-pinacoidal mineral containing arsenic, hydrogen, manganese, and oxygen. ¹
¹ Source: wiktionary.com