You searched for: “ferriferous
ferriferous (adjective), more ferriferous, most ferriferous
Characteristic of rocks that contain iron: Among other miners, Leo and Harold were digging to collect ferriferous ores or quartz which could be used to smelt into steel.

The geologists from the university, William and Carl, identified ferriferous rocks and wrote their report which was given to a mining company.

This entry is located in the following units: -fer, -ferous (page 3) ferro-, ferr-, ferri- (page 1)