amphibole
/ˈæmfɪbəʊl/noun
- any of a class of rock-forming silicate or aluminosilicate minerals typically occurring as fibrous or columnar crystals闪石。
词源
early 19th cent.: from French， from Latin amphibolus 'ambiguous' (because of the varied structure of these minerals)， from Greek amphibolos, from amphi- 'both， on both sides' + ballein 'to throw'.