| 单词 |
grunstein |
| 释义 |
† grunstein Min. Obs. Also 8 grunsten. [a. G. grünstein = Sw. grönsten.] = greenstone 1. ? A mineral, compounded of siderite and mica. Also attrib.
1796Kirwan Elem. Min. (ed. 2) I. 343 Of the binary aggregates of the Granitic kind. M. Werner..denotes only the aggregate of hornblende and felspar, or mica, by the name of Grunsten. 1811Pinkerton Petral. I. 7 Grunstein porphyry, the green porphyry of the ancients, and grunstein slate. Ibid. 12 The real grunstein of the Swedes is a mixture of siderite and mica, sometimes with particles of quartz. |

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