Lead ore in an unrefined state; lead ore fragments and waste which have passed through a sieve.

(a) an ore of lead with a ‘steel-grain’; (b) siderite or native ferrous carbonate.

bing ore (or simply bing): the best lead ore.

orthorhombic lead carbonate, which is one of the principal ores of lead; = cerussite, n.

a green ore of lead; esp. pyromorphite or mimetite.

Mineralogy. ‘Lead ore mixed with other minerals.’ Raymond Mining Gloss. 1881.

Mineralogy. More fully red lead of Siberia, Siberian red lead. = red lead ore, n. Now historical.

= crocoite, n. Cf. red lead, n. 2.

A colourless variety of mimetite, containing calcium; a variety of green lead ore.

Native carbonate of lead, white lead ore.

Silver in combination with lead, esp. in the form of ore. Chiefly attributive.