karelianite
(mineralogy) A trigonal-hexagonal scalenohedral black mineral containing oxygen and vanadium.
plural of Tilbury
plural of Dzungar
plural of Davidson plum
地質学者は露頭の脈に埋まっている、酸素とバナジウムを含む三方晶系・六方スカレノヘドラルの黒い鉱物を発見した。
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