英语词汇“penfieldite”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

penfieldite

释义

penfieldite Min.|ˈpɛnfiːldaɪt|
[f. the name of Samuel L. Penfield (1856–1906), U.S. mineralogist + -ite¹.]
A basic lead chloride, Pb₂Cl₃OH, occurring as very small, usu. prismatic crystals that are colourless and transparent when pure.
1892F. A. Genth in Amer. Jrnl. Sci. CXLIV. 260 While examining a lot of minerals, formed by the action of sea water on ancient slags which Mr. Geo. L. English collected at Laurion, Greece, I noticed a very few hexagonal crystals which proved to be a new species, for which I propose the name: Penfieldite, in honor to Prof. Sam'l L. Penfield the indefatigable worker in mineralogy and crystallography.1954Mineral Abstr. XII. 453 The stocks..of two Roman anchors recovered from the Mediterranean are covered with a crust of small crystals of anglesite, phosgenite, penfieldite, with less cerussite, hydrocerussite, and specks of metallic copper and copper stains.1969Ibid. XX. 144/2 Penfieldite,..from Laurium, Greece, and from Sierra Gorda, Chile, has a 11·28, c 48·65 Å.

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