Ferberite is a mineral that is commonly found in tungsten ores. While it is a unique word that describes a specific type of mineral, there are several synonyms that can be used in place of ferberite. One such synonym is wolframite, which is also a mineral that contains tungsten. Another possible synonym is iron-rich tungsten, which describes the high iron content of ferberite. Black tungsten and iron tungsten are also possible synonyms for ferberite, as they both describe the same mineral's color and composition. By using these synonyms, we can avoid repetition and add variety to our descriptions of ferberite.