Tongo-Tonguma Diamond Project (Tongo-Panguma Kimberlite Field), Kenema District, Eastern Province, Sierra Leonei
|Regional Level Types|
|Tongo-Tonguma Diamond Project (Tongo-Panguma Kimberlite Field)||Project|
|Latitude & Longitude (WGS84):||8° 13' 35'' North , 11° 4' 31'' West|
|Latitude & Longitude (decimal):||8.22658,-11.07538|
|Owned/operated by:||Stellar Diamonds plc|
|Köppen climate type:||Am : Tropical monsoon climate|
Diamond 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.
Combined inferred resource of 4.5 million carats.
Regions containing this locality
|African Plate||Tectonic Plate|
|West Africa||UN Subregion|
Select Mineral List TypeStandard Detailed Strunz Dana Chemical Elements
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
1 valid mineral.
Detailed Mineral List:
Reference: Edward I. Erlich, W. Dan Hausel (2002) Diamond deposits: origin, exploration, and history of discovery. Society for Mining, Metallurgy, and Exploration 392p
List of minerals arranged by Dana 8th Edition classification
|Group 1 - NATIVE ELEMENTS AND ALLOYS|
|Semi-metals and non-metals|
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
2500 - 4000 Ma
|Archean crystalline metamorphic rocks|
Age: Archean (2500 - 4000 Ma)
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. 
|Mesoarchean - Paleoarchean|
2800 - 3600 Ma
Age: Archean (2800 - 3600 Ma)
Lithology: Plutonic and metamorphic
Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. 
|Title (click to view)||Year||Author|
|Building the Tongo-Tonguma Diamond Mine||2017||Stellar Diamonds plc|