harkerite
plural of ground water
plural of separatum
plural of ferriprotoporphyrin
(mineralogy) A trigonal-hexagonal scalenohedral colorless mineral containing aluminum, boron, calcium, carbon, hydrogen, magnesium, oxygen, and silicon.
地質学者は、結晶習性を調べるために、偏光下でアルミニウム、ホウ素、カルシウム、炭素、水素、マグネシウム、酸素、ケイ素を含む、三方晶系(六方晶系)スカレノヘドロン状の無色鉱物の標本を注意深く観察した。
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