augen-gneissn.

Brit.

/ˈaʊɡ(ə)nnʌɪs/, U.S.

/ˈaʊɡənˌnaɪs/

Origin: A borrowing from German. Etymon: German Augengneis.

Etymology: < German Augengneis (1823 as Augengneiss , or earlier) < Augen , plural of Auge eye n.¹ + Gneis gneiss n. Compare later augen n. and the discussion at that entry.

Geology.

A variety of gneiss containing large grains of feldspar flattened in the direction of the banding within the rock.Cf. eye gneiss at eye n.¹ 10d.

ΚΠ

1858 Mining & Statistic Mag. May 353/1 A table, in which different rocks of the Erzgebirge are enumerated... Micaceous Augen-gneiss, [etc.].

1883 Mem. Geol. Surv. India 22 307 At the mouth of..the Brai valley, there occurs a large development of so-called ‘eyed-’ or ‘augen-gneiss’.

1955 R. M. Pearl How to know Minerals & Rocks 166 An interesting variety is augen-gneiss, in which oval fragments of feldspar look like eyes peering out of the rock.

2010 C. Owen et al. Earth Lab (ed. 3) v. 104 (caption) Dramatically foliated and folded gneiss with some eyes, but not quite enough to call it an augen gneiss.

This entry has been updated (OED Third Edition, September 2017; most recently modified version published online December 2021).

单词	augen-gneiss
释义	augen-gneissn. Brit. /ˈaʊɡ(ə)nnʌɪs/, U.S. /ˈaʊɡənˌnaɪs/ Origin: A borrowing from German. Etymon: German Augengneis. Etymology: < German Augengneis (1823 as Augengneiss , or earlier) < Augen , plural of Auge eye n.¹ + Gneis gneiss n. Compare later augen n. and the discussion at that entry. Geology. A variety of gneiss containing large grains of feldspar flattened in the direction of the banding within the rock.Cf. eye gneiss at eye n.¹ 10d. ΚΠ 1858 Mining & Statistic Mag. May 353/1 A table, in which different rocks of the Erzgebirge are enumerated... Micaceous Augen-gneiss, [etc.]. 1883 Mem. Geol. Surv. India 22 307 At the mouth of..the Brai valley, there occurs a large development of so-called ‘eyed-’ or ‘augen-gneiss’. 1955 R. M. Pearl How to know Minerals & Rocks 166 An interesting variety is augen-gneiss, in which oval fragments of feldspar look like eyes peering out of the rock. 2010 C. Owen et al. Earth Lab (ed. 3) v. 104 (caption) Dramatically foliated and folded gneiss with some eyes, but not quite enough to call it an augen gneiss. This entry has been updated (OED Third Edition, September 2017; most recently modified version published online December 2021). < n.1858
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