Tongo-Panguma Field, Kenema District, Eastern Province, Sierra LeoneDiamond project 50 km S of Yengema.
The dykes are narrow (0.2 to 0.5 m thick) but very rich in grade. The diamonds are predominantly of gem quality. To a depth of 500 m, the 4 kimberlite dykes in the Tongo mining lease may contain 9.45 million carats.
1 entry listed. 1 valid mineral.
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