Below one can find a very brief information about the types of ores that we work with and which are located on our concessions.

 

Rare earth elements pegmatite

The rare earth elements pegmatites of northern Mozambique are known for their gemstones, rare and unique mineral specimens and as a source for a variety of rare element minerals such as beryl, tantalum and niobium, lithium, caesium, rubidium, bismuth.

 

Quartz-gold ore

Quartz veins occur among amphibole, biotite and quartz-feldspar gneisses. Usually, productive gold packs of mica schists are cut and cut by quartz veins and streaks with a thickness of up to 2–3 meters and a length of up to 800 meters. The mineralized zones mainly lie in the contact part of amphibolite-biotite schists and gneisses and form linear stockworks, which stand out in the relief in the form of hills, in some cases with an “iron hat”, where such formations are not affected by the mining work. Less frequently, such interlayers form quartzites among gneisses. In some cases, zones of tectonic faults can be traced lithologically and by mine works.

Gold content according to the results of quartz veins sample analysis are 1 to 15 g / t, on average - 3 g / t. Increased gold contents, up to 7 g / t, were also established in mica schists in the mineralized crushing zones associated with tectonic faults. The presence of gold mineralization directly in amphibolite-biotite shales in the zone of tectonic faults undoubtedly increases the ore potential of these ore occurrences. Rare phenocrysts of pyrite and pyrrhotite are noted in quartz, and visible inclusions of native gold are also sometimes noted. In almost all the veins, small (2–3 mm) molybdenite flakes are found sporadically. The micaceous shales enclosing quartz veins are practically destroyed by weathering processes and are easily disassembled manually by the miners (the quartz can be crushed and washed).

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