wood opal

noun

1. a form of petrified wood impregnated by common opal

Example Sentences

Among other minerals, Mr. Schoolcraft mentions chalcedony in several varieties, earthy oxide of lead, native copper, alum, manganese, opalized and agatized wood, opal, jasper, coal, gypsum, native epsom salts, pumice stone, agate, onyx, burr millstone, native iron, &c.; for the localities and descriptions of which, we must refer to the book itself.

From Project Gutenberg

The first table contains a very attractive collection of minerals, including the varieties of jasper; all kinds of opals—the sun opal, the semi-opal, wood opal, and wood partially opalised.

From Project Gutenberg