aphaniteaphanyten.
/ˈafənʌɪt/ Mineralogy.
A compact dark-coloured hornblende rock, so uniform in texture that it shows no distinct grains (whence its name), and breaks with a smooth flint-like fracture; also called Corneine.
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the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > plutonic rocks > greenstone > varieties of
mulatto1816
hornblende rock1821
diorite1826
hypersthene rock1838
hypersthenite1849
norite1853
aphanite1863
hyperite1863
1863 J. D. Dana Man. Geol. 79 Aphanite consists mainly of hornblende with some feldspar..It has been called hornrock.
1883 tr. N. Joly Man before Metals i. vii. 167 They contain weapons of unpolished aphanite, a species of greenstone.
This entry has not yet been fully updated (first published 1885; most recently modified version published online June 2018).
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n.1863