hyperstheniten.
/hʌɪpəsˈθiːnʌɪt/ Mineralogy.
A dark granite-like aggregate of hypersthene and labradorite; also called hyperite n. and norite n.
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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
1849 R. I. Murchison Siluria App. C. 537 ‘Greenstones’..are different varieties of hypersthenite and gabbro.
1879 F. Rutley Study of Rocks xiii. 249 The hypersthenites, or those rocks which consist of rhombic pyroxene in conjunction with triclinic felspar.
This entry has not yet been fully updated (first published 1899; most recently modified version published online June 2018).
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n.1849