hortonolite Min.
(hɔːˈtɒnəlaɪt, ˈhɔːtənəlaɪt)
[f. the name of Silas Ryneck Horton (b. 1820), American amateur mineralogist + -o + -lite.]
A silicate mineral, (Fe, Mg)2SiO4, yellow or greenish-yellow on fresh fracture, having a preponderance of iron over magnesium and often some substitution by manganese (see also quot. 1955).
| 1869 G. J. Brush in Amer. Jrnl. Sci. XCVIII. 19 It is proper to designate this new variety with a special name, and I propose for it the name Hortonolite, after Mr. Horton, who first discovered the mineral. 1939 Amer. Mineral. XXIV. 24 At present the names commonly accepted, in order of increasing richness [of Fe2SiO4] in the fayalite molecule are forsterite, chrysolite, hyalosiderite, hortonolite and fayalite. 1955 M. H. Hey Index Min. Species (ed. 2) 124 Hortonolite. 4[(Fe, Mg)2SiO4], with Fe··> Mg (in Hortonolite proper, Fe2SiO4 50 to 70 mols. %)... The original Hortonolite contained 4% MnO. Olivine family. 1968 Embrey & Phemister tr. Kostov's Mineralogy 291 Titanolivine is rich in Ti; hortonolite is rich in iron. |