silica group
(nonstandard) superlative form of possible: most possible
The characteristic or quality of being illegible; the quality of being difficult or impossible to read.
(mineralogy) A large group of silicate minerals having a silicon to oxygen ratio of 1:2. This group includes many silicates of sodium, potassium, calcium, and aluminum in an open network structure.
simple past tense and past participle of keck
地質学者はこの珪酸塩鉱物群を、ナトリウム、カリウム、カルシウム、アルミニウムを多く含み、ケイ素と酸素の比が1対2の開放的なネットワーク構造をもつ鉱物の一族と見なしている。
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