单词 | plattnerite |
释义 | plattneriten. Mineralogy. Native lead dioxide, PbO2, crystallizing in the tetragonal system and occurring as black crystals or black-brown masses. ΘΚΠ the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > rutile and uranite groups A02 > others plattnerite1849 ramsdellite1943 1849 J. Nicol Man. Mineral. 418 Plattnerite..[is] hexagonal but dimensions unknown. 1914 Brit. Mus.: Return 229 in Parl. Papers (H.C. 186) LXXI. 193 Crystallized plattnerite from Idaho. 1956 Science 8 June 1039/1 The principal minerals identified were legrandite,..plattnerite [etc.]. 1999 I. Kostov & R. I. Kostov Crystal Habits Minerals vi. 151 The isotypic plattnerite PbO2..lacks a cleavage but its crystals vary from prismatic to acicular. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.1849 |
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