| 单词 |
roepperite |
| 释义 |
roepperite Min.|ˈrɜːpəraɪt|
[f. the name of William T. Roepper (1810–80), German-born U.S. mineralogist + -ite1.]
A black mineral of the olivine group containing iron, manganese, and zinc.
The name röpperit (G.) was also proposed in 1872 by A. Kenngott (in Neues Jahrb. f. Mineral. 188) for a species of manganiferous dolomite described by Roepper.
1872G. J. Brush in Dana's Syst. Min. (ed. 5) App. i. 13 Roepperite. Iron, manganese, zinc, chrysolite... Roepperite, G. J. Brush. 1875E. S. Dana Ibid. App. ii. 49 Kenngott..has proposed to give the name rœpperite to the manganese dolomite, analysed by Rœpper... Almost simultaneously..Brush gave the name rœpperite to the new chrysolite of Rœpper, and there is no question but that this name should be received. 1961Amer. Mineralogist XLVI. 549 Roepperite is black... It has been described as a variety of tephroite containing notably high amounts of FeO and ZnO. 1972Ibid. LVII. 977 The infrared spectrum of the zincian olivine roepperite..is comparable to those of Fe-Mn olivines and bears no resemblances to the spectrum of willemite containing tetrahedral Zn2+. |
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