hypersthenite Min.
(haɪpəsˈθiːnaɪt)
[f. hypersthene + -ite.]
A dark granite-like aggregate of hypersthene and labradorite; also called hyperite and norite.
| 1849 Murchison Siluria App. C. 537 ‘Greenstones’..are different varieties of hypersthenite and gabbro. 1879 Rutley Study Rocks xiii. 249 The hypersthenites, or those rocks which consist of rhombic pyroxene in conjunction with triclinic felspar. |