Auriferous

Rocks rich in gems, and mountains big with mines, / That on the high equator ridgy riſe, / Whence many a burſting ſtream auriferous plays: [...]

To these [compounds] belong native gold, alloys of gold and silver, and the argentiferous gold, or auriferous silver, obtained from the assayings of auriferous minerals and ores.

In some places, however, quartz reefs, payably auriferous while in Silurian rock, have been followed down to subjacent granite, and have there been found to thin out and become unprofitable [...]