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Definition of Neltnerite
1. Noun. (minerology) A tetragonal-ditetragonal dipyramidal black mineral containing calcium, manganese, oxygen, and silicon. ¹
¹ Source: wiktionary.com
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1. Noun. (minerology) A tetragonal-ditetragonal dipyramidal black mineral containing calcium, manganese, oxygen, and silicon. ¹
¹ Source: wiktionary.com