neotocite Min.
(niːəʊˈtəʊkaɪt)
Also † neotokite.
[ad. G. neotokit (N. Nordenskiöld Verzeichn. d. in Finland gefund. Min. (1852) (Dana)), f. Gr. νεότοκ-ος new-born, recent (f. νέος new + τόκος offspring, childbirth) + G. -it -ite1.]
A hydrated silicate of manganese and iron, approximately Mn2Fe2Si4O12.6H2O, which is found as black amorphous masses.
| 1854 Dana Syst. Min. (ed. 4) II. 169 A related mineral [to Stratopeite] has been called Neotokite. 1861 Bristow Gloss. Min. 257/1 Neotokite. Probably an altered form of Rhodonite allied to Stratopeite. 1882 Dana Min. (ed. 4) 316 Neotocite (Stratopeite) and Wittingite are results of the alteration of rhodonite, and contain manganese. 1921 Jrnl. Washington Acad. Sci. XI. 27 Some specimens of the bementite rock are cut by thin veinlets of dark brown to black amorphous neotocite. 1932 Amer. Mineralogist XVII. 18 Areas of neotocite, several centimeters across are characterized by glistening black color and conchoidal fracture. 1968 I. Kostov Mineralogy 351 The amorphous silicate of manganese known as neotocite, occurring as black, opal- or coal-like masses is found as a weathering product of rhodonite and as a volcanogenic-sedimentary mineral. |