MINERAL PROSPECTS FOR PROMOTING GREENFIELD AREAS
Mineral Resources: Gold - Copper - Iron - Base Metals - Rare Earth Elements Minerals
IDENTIFYING THE AREA
The area being promoted has mining potential for prospecting Iron Ore, an essential raw material for use in various sectors of the manufacturing industry. It is a greenfield area, the groundwork for which took place during the implemen- tation of the National Geology Plan (PLANAGEO).
Area (Km )
4257
Municipalities
Ambaca, Kiculungo, Negage, Bungo e Puri
Provinces
Cuanza Norte and Uíge
Mineral Resources
Iron Ore
The area is located within sheets SUL B-33-V and SUL C-33-D, at a scale of 1:250,000, where alluvial deposits are identified, containing sands, clays and gravels;
Formation A of the Terreiro Group with feldspathic metaquartzites, feldspathic metagrauvaques, sericite-
-quartz schists and little quartzite, as well as silty slates, claystones from Formation B of the Terreiro Group.
The lower part contains metaquartzites, feldspathic metaquartzites and stratified silty slates; the upper part is characterized by alternations of feldspathic metaquartzites and stratified argillites, part of the Terreiro Group formation.
There are also alkaline granites, unconsolidated sands, laterites of the Kalahari Group, meta-arches, feldspathic metaquartzites, metasiltstones, intercalations of silty slates, phyllites, quartzites and meta-conglomerates of the Lulumba Group and the Uonde Group, with silty claystones, carbonaceous slates, claystones and sericite schists.
In and around the area, there are potential occurrences of kaolin, calcite, limonite, limestone, talc, magnetite, psilomelane and hematite.
RECENT WORK AND RESULTS
The area under promotion has aero-geophysical information on magnetometry and radiometry acquired by means of flight lines with a spacing of 1,000 m and an altitude between 80 to 120 m.
This data, available from the Geological Institute of Angola, can be used as support during the development of geological-mining activities.
The following results were obtained:
- Airborne geophysics (magnetometry and radio- metry);
- Systematic geological mapping at a scale of 1:250,000;
- Regional geochemistry at a scale of 1:250,000;
- Various specific studies relating to areas of special geological interest.
The following maps were produced from the airborne magnetometry and gamma spectro- metry campaign:
- Map of total magnetic field strength corrected for IGRF and reduced to the pole;
- Map of derivatives (1st and 2nd vertical derivati- ves of magnetic field strength);
- Horizontal gradient in Y of the magnetic field intensity reduced to the pole. The same was done for remote sensing. Terrain elevation model (DEM);
- Regional geochemistry at a scale of 1:250,000;
- Various specific studies relating to areas of special geological interest.
- Ternary radiometric map (K, U, Th); Total count radiometric map.
INFRASTRUCTURE AND SERVICES
The region is endowed with essential infrastructure and services for the development of mining projects, such as:
- The area can be reached via National Roads 220, 225 and 309;
- Electricity can be supplied from the connection to the National Electricity Transmission Network;
- The existence of financial services and solid telecommunications structures;
- The Luanda Railway can be used during all stages of geological and mining activities.
