corsiten.
/ˈkɔːsʌɪt/ Geology.
An orbicular gabbro found in Corsica.
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the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > plutonic rocks > other plutonics
dunite1859
napoleonite1866
corsite1876
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granodiorite1893
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syenodiorite1917
microdiorite1920
trondhjemite1922
1876 A. H. Green Geol. for Students: Physical Geol. 65 Corsite or Napoleonite..is a granular mixture of Anorthite, Hornblende, and a little quartz. The most noticeable variety occurs in Corsica: the rock there is made up of balls from one to three inches in diameter.
1885 A. Geikie Text-bk. Geol. (ed. 2) ii. ii. vii. 148 Corsite is a granitoid mixture of greyish-white anorthite, blackish-green hornblende and some quartz, which here and there have grouped themselves into globular aggregations (Orbicular diorite, Kugeldiorit, Napoleonite).
1954 G. W. Himus Dict. Geol. 32 Corsite, a variety of dolerite exhibiting orbicular structure and consisting essentially of bytownite and amphiboles.
1957 Encycl. Brit. VII. 401/1 The orbicular diorite of Corsica (also called ‘napoleonite’ or ‘corsite’).
This entry has not yet been fully updated (first published 1933; most recently modified version published online September 2019).
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