| 释义 |
sinhalite Min.|ˈsɪnhəlaɪt|
[f. as Sinhalese n. and a. + -ite1.]
A borate of aluminium and magnesium, MgAlBO4 (usu. also containing iron), which forms pale yellow to deep brown orthorhombic crystals resembling olivine and frequently of gem quality.
1952Claringbull & Hey in Mineral. Mag. XXIX. 843 For this new mineral the name sinhalite is proposed, from Sinhala the Sanskrit name for Ceylon. 1952Times 4 Dec. 3/3 Sinhalite..was previously thought to be an olivine rich in iron. 1965Amer. Mineralogist L. 1979 The sinhalite from Ceylon had a density of 3·494, corresponding to a composition (Al,Mg)1·95Fe0·05BO4. Judging from the absorption data, most of the iron in sinhalite is divalent. 1971Jrnl. Gemmology XII. 154 One of the few sinhalites we have officially tested..was an attractive golden brown specimen. |