rubellann.

Brit.

/ˈruːbᵻlan/, U.S.

/ˈrubəˌlæn/

Forms: 1800s– rubellan, 1800s– rubellane.

Origin: A borrowing from Latin, combined with an English element; modelled on a German lexical item. Etymons: Latin rubellus , -an suffix.

Etymology: < classical Latin rubellus reddish (see rubella n.) + -an suffix, after German Rubellan ( A. Breithaupt Vollständige Charakteristik des Mineral-Syst. (ed. 2, 1823) 30).

Mineralogy. Now rare.

A reddish mineral now regarded as a variety of biotite.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > mica > biotite > varieties

rubellan1832

haughtonite1878

hydrobiotite1881

siderophyllite1881

caswellite1894

1832 C. U. Shepard Treat. Mineral. 246 Imperfectly examined minerals... Rubellan, Breit[haupt]... C[olor]. brownish-red. Brittle.

1853 Jrnl. Bombay Branch Royal Asiatic Soc. 5 263 Sometimes this magnesia mica or Rubellan seems, in minute crystallization, to form the greater part of the base of the red amygdaloids.

1888 F. Rutley Rock-forming Minerals 197 Some varieties, as rubellane, show dark reddish-yellow or orange tints.

1913 J. P. Iddings Igneous Rocks II. 260 The groundmass consists of leucite and nephelite, with less orthoclase, and ægirite prismoids..; rubellan-like biotite is sporadic.

This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022).

单词	rubellan
释义	rubellann. Brit. /ˈruːbᵻlan/, U.S. /ˈrubəˌlæn/ Forms: 1800s– rubellan, 1800s– rubellane. Origin: A borrowing from Latin, combined with an English element; modelled on a German lexical item. Etymons: Latin rubellus , -an suffix. Etymology: < classical Latin rubellus reddish (see rubella n.) + -an suffix, after German Rubellan ( A. Breithaupt Vollständige Charakteristik des Mineral-Syst. (ed. 2, 1823) 30). Mineralogy. Now rare. A reddish mineral now regarded as a variety of biotite. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > mica > biotite > varieties rubellan1832 haughtonite1878 hydrobiotite1881 siderophyllite1881 caswellite1894 1832 C. U. Shepard Treat. Mineral. 246 Imperfectly examined minerals... Rubellan, Breit[haupt]... C[olor]. brownish-red. Brittle. 1853 Jrnl. Bombay Branch Royal Asiatic Soc. 5 263 Sometimes this magnesia mica or Rubellan seems, in minute crystallization, to form the greater part of the base of the red amygdaloids. 1888 F. Rutley Rock-forming Minerals 197 Some varieties, as rubellane, show dark reddish-yellow or orange tints. 1913 J. P. Iddings Igneous Rocks II. 260 The groundmass consists of leucite and nephelite, with less orthoclase, and ægirite prismoids..; rubellan-like biotite is sporadic. This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022). < n.1832
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