Persistent shear-hosted vein systems are more informative than isolated quartz float.
Tanzania gold geology
Public previewLake Victoria Goldfields
Kahama–Bulyanhulu District
The Kahama–Bulyanhulu area belongs to the Lake Victoria Goldfields but also contains non-gold industrial and mineral activity. The gold reference model is based on deformed volcanic and volcaniclastic successions cut by persistent shear-hosted quartz-vein systems. Mine-specific reef names and resource figures remain confined to Bulyanhulu.
Updated: 2026-08-13
Volcanic contacts and structural preparation must be mapped together.
Current operational and resource statements require an effective date.
Report overview
01
Geological setting
Historical technical descriptions place Bulyanhulu in a mafic volcanic succession overlain by pyroclastic and ash-tuff units. Deformation and metamorphism created strong structural and rheological contrasts that later hydrothermal systems could exploit.
The wider Kahama name should not be used as a geological shortcut. Each licence needs an identified greenstone succession, intrusive relationship and structural history.
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Sign inReferences and source boundaries
Barrick Mining Corporation / U.S. SEC2026; data at 2025-12-31
Barrick Year-End 2025 Management’s Discussion and Analysis
- Used for
- Current dated disclosure for Bulyanhulu and North Mara.
- Limit
- Corporate reporting; mine-specific values and forward-looking statements require their original qualifications.
Barrick Gold Corporation / U.S. SEC2025
Barrick Annual Report 2024
- Used for
- Recent exploration context and dated company disclosure.
- Limit
- Exploration anomalies and targets are not resources or proof for third-party licences.
Barrick Gold Corporation / U.S. SEC2004
Historical Bulyanhulu technical disclosure
- Used for
- Historical description of volcanic stratigraphy and vein-hosted mineralisation.
- Limit
- Historical source; not current for operations, resources, ownership or 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.