Geological Foundation — Legion Mining Company
Kakamega County, Western Kenya · Nyanzian Greenstone Belt
Legion Mining operates on one of East Africa's most significant ancient gold-bearing geological formations — the same belt that hosts world-class mines in Tanzania and DRC.
The Nyanzian Greenstone Belt is an Archean geological formation approximately 2.5 to 2.8 billion years old. It is composed of ancient volcanic and sedimentary rocks — basalts, andesites, tholeiites — that formed during a period of intense geological activity deep in Earth's history.
Gold-bearing hydrothermal fluids moved through fractures and shear zones in this rock system, depositing gold alongside quartz veins and sulfide minerals. Over billions of years, weathering exposed these veins at the surface — creating the reef structures and alluvial gold deposits that artisanal miners in Kakamega work today.
The belt trends WNW to ESE — running from the Uganda border area through Kakamega, across Vihiga, down toward Kisumu and beyond into Tanzania.
The Nyanzian Greenstone Belt does not stop at Kenya's border. It continues south through Tanzania — through the Geita Greenstone Belt, home to one of Africa's largest open-pit gold mines — and extends into the Democratic Republic of Congo.
The same ancient geological system. The same hydrothermal gold-deposition chemistry. The same structural controls.
What differs is the stage of development. Tanzania's deposits are at commercial mining scale. Kakamega's deposits are being worked by artisanal miners — with the majority of gold value still being left behind due to limited processing technology.
That gap is precisely where Legion Mining operates.
Gold Prospect Areas — Western Kenya Greenstone Belt
Field work at artisanal mining sites across Kakamega County confirms the geology. White and milky quartz veins with iron oxide staining — limonite from weathered pyrite — are visible indicators of gold-bearing hydrothermal systems. Green alteration minerals (epidote and chlorite) appearing alongside gold particles confirm proximity to active gold zones within the greenstone system.
River streams in the region expose reef structures — quartz veins cutting through riverbeds where erosion has removed the surrounding softer rock. These reefs are the same primary vein systems being chased by shaft miners.
JML Laboratories (Job No. 1470) confirmed ore samples from the region returned 2.58 ppm gold — a grade consistent with economically viable processing through Carbon-in-Leach.
Gold in greenstone belt ore is not all visible to the naked eye. Much of it is locked in fine particles and sulfide minerals — invisible, but real. Traditional mercury amalgamation and gravity separation, used across Kakamega's artisanal sector, capture only a fraction of this value.
Carbon-in-Leach processing dissolves gold from crushed ore using cyanide solution, then adsorbs it onto activated carbon — capturing fine and sulfide-locked gold that mercury simply cannot recover. On the Nyanzian Greenstone Belt, where sulfide mineralization is prevalent, this difference is substantial.
Legion Mining is building a CIL processing operation to buy ore from artisanal miners across this belt and recover what is currently being lost.
Seed round open · KES 8 Million · Kakamega County, Kenya
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