BIF and intrusive contacts are important in several Geita deposits, but neither feature is diagnostic by itself.
Tanzania gold geology
Public previewLake Victoria Goldfields
Geita Greenstone Belt
Geita is a structurally complex Archaean gold district in the Lake Victoria Goldfields. Public technical disclosure describes mineralisation in deformed metasedimentary and intrusive-contact settings, with BIF, shearing, brecciation and fold geometry varying between deposits. This report treats those relationships as district-scale reference characteristics, not as evidence that a nearby licence contains the same hosts or mineralised shoots.
Updated: 2026-08-13
Folds, shear zones, jogs, bends and brecciation can focus fluid flow and higher-grade shoots.
Ferricrete and palaeodrainage require separate treatment from fresh-rock geochemistry.
Report overview
01
Geological setting
The Geita mine technical report places the district in the late Archaean Geita greenstone belt, part of the outer Sukumaland belt. The succession includes metabasalt, metasedimentary units and varied intrusive rocks, all affected by deformation and metamorphism.
The belt is poorly exposed in places. Ferricrete and palaeo-alluvial cover mean that surface colour, float and soil anomalies must be connected back to mapped bedrock before they are treated as primary geological evidence.
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Sign inReferences and source boundaries
AngloGold Ashanti / U.S. SEC2026; effective 2025-12-31
Geita Gold Mine Technical Report Summary — current at 31 December 2025
- Used for
- Current mine-specific geology, mineralisation and technical-reporting context.
- Limit
- Mine-specific disclosure; figures, resources and targets do not transfer to neighbouring licences.
James Cook University2017
Geological controls on gold mineralization in the Kukuluma Terrain, Geita Greenstone Belt, NW Tanzania
- Used for
- Academic structural and lithological context for part of the Geita belt.
- Limit
- A thesis-scale study of a defined terrain, not a current statement for every Geita licence.
Geological Survey of Tanzaniaverified 2026
Geology and Minerals Potential in Tanzania
- Used for
- National geological and mineral-potential framework.
- Limit
- Regional overview; it does not define an orebody or current licence status.
GLEAN GOLD bilingual regional synthesis — source-linked, non-independent and not a mineral resource or reserve statement.
Regional reference only. This report does not establish mineralisation, resources, reserves, title status or investment value for any licence. Project conclusions require verified field observations, structural measurements, representative assays and QA/QC.