skinnerite
Not abelian.
Resembling a badge.
A surname.
(mineralogy) A monoclinic-prismatic silver gray mineral containing antimony, copper, and sulfur.
地質学者は結晶の形態を調べるために、アンチモン、銅、硫黄を含む単斜晶系の銀灰色の鉱物の標本を顕微鏡で注意深く観察した。
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DiQt
Free
★★★★★★★★★★