单词 grunstein 释义 † grunstein Min. Obs.Also 8 grunsten.[a. G. grnstein = Sw. grnsten.]= 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. Wern...