释义 |
picotite Min.|ˈpɪkətaɪt| [a. mod.F., named 1812 after Picot, Baron de la Peyrouse (1744–1818), who described it: see -ite1.] A black variety of spinel containing chromium, occurring in minute grains and crystals in lherzolite.
1814T. Allan Min. Nomencl. 37. 1832 C. U. Shepard Min. i. 246 Picotite. 1879Rutley Study Rocks xiii. 264 The picotite appears, under the microscope, in very irregular brown, or..deep olive-green, patches or grains. 1892Dana Min. (ed. 6) 221 Picotite or chrom-spinel. |