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1.

A Review of Granitoid-Related gold mine ralization Styles and Characteristics of the Neoproterozoic Eastern Gold Districts, Cameroon and the Role of Fluid Inclusion Studies in Elucidating the Genesis R.B. Ngatcha, O.A. Okunlola, C.E. Suh, E.R. Eben Mboe, C. Fuanya Journal of Geosciences and Geomatics. 2018 6 (3). doi: 10.12691/jgg-6-3-4 Keywords: neoproterozoic, granitoids, gold mine ralization, hydrothermal alteration, fluid inclusion, Cameroon Context: ...l, structural and geochemical data have been used to study the relationships between magmatism, tectonics, fluid circulation and gold mine ralization in eastern Cameroon, and to provide pressure-temperature-composition-time paths constrained by the available dating. Prim... Abstract Full Text (PDF) [Epub] Full Text (HTML)

2.

Geometric Readaptation of Open-Pit Slopes for the Optimization of Stability and Productivity: Case of the Sadiola gold mine (Mali) Lamine BAR, Déthié SARR, Mamadou Koné American Journal of Mining and Metallurgy. 2026 9 (1). doi: 10.12691/ajmm-9-1-1 Keywords: Slope stability, bench geometry, kinematic analysis, open-pit mining, Sadiola, Kédougou–Kéniéba inlier Context: Slope stability in the open-pit mines of the Kédougou–Kéniéba belt, particularly at Sadiola (Mali), is a critical factor for both operational safety and economic performance. To assess slope stability, this study integrates three complementary approaches: back-analysis of past instabilities, structural mapping using mapping windows and scanline surveys, and kinematic analysis of discontinuities. The results indicate that slope failures are primarily controlled by structural discontinuities, with a predominance of planar failure mechanisms. Only 15% of the recorded instabilities affect competent rock, whereas 55% involve limited volumes confined to 10 m high benches, reflecting the predominantly superficial character of the observed failures. Kinematic analyses reveal variable stability conditions across the mine, with higher susceptibility identified on the western and southern pit walls. Based on these findings, geometric optimizations are proposed to improve both slope stability and mining productivity. These include increasing bench height from 10 m to 20 m while reducing the face angle from 90° to 75°. The inter-ramp angle is set at 35° in saprolitic materials (overall height of 50 m) and 55° in competent rock (overall height of 100 m), while a steeper angle of 60° is maintained on the eastern wall due to more favorable structural conditions. Berm design is further optimized through the introduction of a second ramp on the eastern wall. These adaptations provide a balanced compromise between geotechnical safety and operational efficiency within the structurally complex environment of the Sadiola open pit mine. Abstract Full Text (PDF) [Epub] Full Text (HTML)

3.

Petrographic and Structural Study Contribution in the Comprehension of the of gold mine ralisation in the Biboko Area (betare-oya Gold District), East-Cameroon Ismaila Ahmadou, Mana Bouba Christian, Ipan Antoinette Solange, Aboubakar Abdoulaye Sahabo, Sep Nlonngan Jean Paul, Yinyang Wanbitching Raoul, Mohamadou Sali, Tchameni Rigobert Journal of Geosciences and Geomatics. 2022 10 (2). doi: 10.12691/jgg-10-2-1 Keywords: Pétrographie, structural, Biboko, Amphibolites facies, hydrothermalism Context: The Biboko locality is located eastward in the central domain of the Pan-African Fold Belt of Central Africa. The task consisted in the cartography of the various types of rocks, to do their petrographic and structural studies with the aim of understanding the geological context of gold which is be exploited in the locality. Weal so brought out the study of environmental impact generated by this exploitation. The main types of rock identified in the locality could be grouped in to two: the metamorphic and plutonic rocks and their associate intrusion. The metamorphic rocks are represented by amphibole-biotite orthogneisses and amphibolites. Their main blade texture is granonematoblastic. The primary assemblage is made up of amphibole, biotite, plagioclase, quartz, zircon and apatite which are in equilibrium in the amphibolite facies. The secondary assemblage is made up of quartz, biotite, chlorite, pyrite, sericites derived from either the alteration or the recristallization of the primary assemblage. The plutonic rocks are slightly deformed and are represented by biotite bearing tonalite, microcline bearing granite, biotite bearing granite, biotite-epidote granite. These rocks have grained-oriented texture made up of quartz + microcline + orthose + plagioclase +/- biotite + accessory minerals. Concerning the structural study of the area, we have four deformationals phases. The first phase D1 is caracterized by subhorizontal shistosity/ foliation. The second phase D2, caracterised by open folds P2, shistosity S2, subvertical to vertical and slightly plonge lineation L2. It is a transpressive deformation with senestral sheared plans. The migmatisation which is the origin of certain plutonic rocks is syn-D1 to syn-D2. The third phase which is not penetrative, is made of folds P3 with straight axes and crenulation S3. The fourth phase is brittle-like and characterized by fractures. The abondances in secondary minerals (microcline, pyrite, chlorite, sericite) in certain facies (microcline bearing granite) is a proof for hydrothermalism. Part of gold found at Biboko could have been derive from altered rocks in the region. This is proved by the presence quartz in intrusion slightly mineralised in pyrite which is associate mineral of gold. Abstract Full Text (PDF) [Epub] Full Text (HTML)

4.

Pollution and Ecological Risk Assessment of Heavy Metals in the Agricultural Soils Around a gold mine in BISSA Village, Burkina-Faso Yalgado Zakaria Sawadogo, Telado Luc Bambara, Inoussa Zongo, Karim Kaboré, François Zougmoré Journal of Environment Pollution and Human Health. 2023 11 (3). doi: 10.12691/jephh-11-3-1 Keywords: soil, heavy metals, pollution, ecological risk, gold mine Context: ...ment. The objective of this study is to assess heavy metal contamination and the ecological risks of agricultural soils around a gold mine , mainly in Bissa, a village in the commune of SABCÉ. Twelve (12) soils samples were collected on the surface, in depths of 0 to 15c... Abstract Full Text (PDF) [Epub] Full Text (HTML)

5.

Presence of Arbuscular Mycorrhizal Fungi on Fern from Tailing Deposition Area of gold mine in Timika, Indonesia Suharno, Rina Sri Kasiamdari, Endang Sutariningsih Soetarto, Retno Peni Sancayaningsih International Journal of Environmental Bioremediation & Biodegradation. 2016 4 (1). doi: 10.12691/ijebb-4-1-1 Keywords: Arbuscular Mycorrhizal Fungi, Tailings, Ferns, gold mine , Timika Context: ...f fern plants Equisetum debile, Pteris radicans, and Nephrolepis hirsutula that grow in the tailing area of gold mine Timika. The study used a survey method to isolate AMF from the root rhizosphere of fern plants in the gold mine tailing deposition ... Abstract Full Text (PDF) [Epub] Full Text (HTML)