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Definition of Grayite
1. Noun. (minerology) A hexagonal-trapezohedral mineral containing calcium, hydrogen, lead, oxygen, phosphorus, and thorium. ¹
¹ Source: wiktionary.com
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1. Noun. (minerology) A hexagonal-trapezohedral mineral containing calcium, hydrogen, lead, oxygen, phosphorus, and thorium. ¹
¹ Source: wiktionary.com