| A variety of sedimentary lithologies have been metamorphosed including pelites, psammites, quartzites and carbonates. |
| Here it again flows through narrow, steep-edged trenches formed by quartzites and shales. |
| Associated units are sillimanite-bearing aluminous metasediments, quartzites, and arnphibolites. |
| The major rock types in the Masasi area are granitoid gneisses, marbles, schists and quartzites. |
| The copper is associated with silver, cobalt, lead and zinc in quartzites and dolomites. |
| Pure quartzites are a source of silica for metallurgical purposes and for the manufacture of silica brick. |
