| 释义 |
chamoisite|ˈʃæmwəzaɪt|
[Named 1820 from Chamoison, in the Valais, where first found.]
A hydrous silicate of iron often occurring in grains.
1832Shepard Min. 123 Chamoisite appears to be an impure variety. 1868Dana Min. 511.
Also 9 chamoisite |ˈʃæmwəzait|. [a. F. chamosite (P. Berthier 1820, in Ann. des Mines V. 393, as chamoisite), f. Chamoson, earlier Chamoison, the name of the village in the Valais, Switzerland, where first found: see -ite1. Berthier revised the spelling to chamosite in 1827 (Ann. Chim. Phys. XXXV. 258).] A hydrous silicate of iron often occurring in grains.
1832C. U. Shepard Treat. Min.: Introd. Vol. 123 Chamoisite appears to be an impure variety. 1868J. D. Dana Syst. Min. (ed. 5) 511 Chamoisite. 1892E. S. Dana Dana's Syst. Min. (ed. 6) 658 Chamosite, as originally described, occurs compact or oölitic. 1928W. Lindgren Mineral Deposits (ed. 3) xviii. 307 The common types of [Jurassic iron] ore are designated as ‘chamositic mudstone’ and ‘chamositic, siderite mudstone:’ a marine deposit composed of a matrix of fine-grained chamosite with oölites of same and rhombs and grains of siderite. 1951Proc. Yorks. Geol. Soc. XXVIII. 61 ‘Chamoisite’ slept peacefully in mineral collections for nearly 100 years. 1962W. T. Huang Petrol. vii. 294 Chamosite, an iron-rich chlorite, is an important constituent of some sedimentary iron ores. The Chamosite ironstones consist of a fine-grained aggregate of green, cryptocrystalline chamosite. 1983B. Simpson Rocks & Minerals (rev. ed.) xix. 215 The presence of plant life..ensures the formation of organic solutions and so of reducing environments under which siderite and chamosite are deposited. |