plumbian, a. Min.
(ˈplʌmbɪən)
[f. L. plumb-um lead + -ian 2.]
Of a mineral: having a (small) proportion of a constituent element replaced by lead.
| 1930 W. T. Schaller in Amer. Mineralogist XV. 571 Lead—plumbian. 1944 C. Palache et al. Dana's Syst. Min. (ed. 7) I. 804 Var. Ordinary. Calcium and uranium... Plumbian... With PB:U = 3:8 (anal. 1). Titanian. With Ti:Cb + Ta:Fe3 = 9:3:1 (anal. 6). 1968 I. Kostov Mineralogy ii. ii. 169 The following varieties are recognized: (a) of tetrahedrite—ordinary, zincian, ferroan,..plumbian, nickelian, etc. |