Gravity circuit gold mining3/5/2023 These structures are coincident with mineralisation in the Bellevue area and are possibly coeval with the regional 2.645 –2.63Ga Gold Event.ĭ4: Progressive NE-SW compression leads to post-mineralisation SE and NW dipping planar faults and minor shears.ĭ5: Orogenic collapse, planar faults with steep slickenlines. Continued compression leading to the locking up of lateral escape structures and the establishment of a conjugate architecture of thrust faults which cross-cut earlier sinistral structures. ![]() Ongoing extension leads to exhumation of granites and creation of unconformable sub-basins with recumbent folding proximal to sheared margins.ĭ2: Largely E-W compression, reactivates extensional structures and establishes thrust and fold architecture with NNW striking shear zones and fold axisĭ3: Progressive NW-SE compression leading to the development of sinistral lateral escape structures, often nucleating on the D2 fold axis. The belt has a complex deformation history with structural reactivation and switching kinematics.ĭ1: Progressive extension and basin formation. The Mt Goode mafic sequence is part of the lower mafic sequence of the Eastern Goldfields super terrane and equivalent to the Kambalda sequence of the Kalgoorlie Terrane. The Bellevue area stratigraphy broadly correlates to that of the Kalgoorlie terrane, with a lower mafic sequence (Kambalda sequence), an upper metasedimentary sequence (Kalgoorlie sequence) which is unconformable to the mafics below, and a late basin sequence, which is separated from the Kalgoorlie sequence with an unconformity. The Bellevue Gold Deposit is proximal to the Keith-Kilkenny Shear and the regional scale Waroonga and Miranda shear zones. The domain is bounded to the east by the crustal scale Keith-Kilkenny Shear (Perseverance Fault) and bounded by the Ida Lineament to the West (Figure 3). A simplified stratigraphic column of the Bellevue area is shown in Figure 3. A mixed sequence of metamorphosed ultra-mafics and felsic volcanics overly the Mt Goode basalts and in turn sit underneath the unconformable boundary of a late basin conglomeratic sequence (the Jones Creek conglomerates). ![]() The Yakabindie domain consists of the layered Kathleen Valley gabbro (dated at 2.736Ga) overlain by the tholeiitic Mt Goode basalt sequence. The BGP sits within the Yakabindie domain of the Agnew-Wiluna Greenstone Belt of the Eastern Goldfields Super Terrane, on the Sir Samuel 1:250,000 map sheet. With a highly experienced management team in place the Company is fully funded into production with a $200 million underwritten and credit-approved loan secured to fund construction and development activities. The high-grade nature of the mine at Bellevue is conducive to profitability and the mine is forecast to produce $2.1 billion of free cashflow (pre-tax) over the life of mine (assuming gold price of A$2,500/oz). When operational the Bellevue Gold Mine is forecast to be one of the highest-grade, lowest cost mines in Australia with the first 5 years producing an average of more than 200,000 ounces per year at an all-in sustaining cost (AISC) of A$1,000-1,100 per ounce. The project has an initial 10 year mine life based on a LOM of 1.85 Moz 5.8 g/t gold and includes a probable ore reserve of 1.34 Moz 6.1 g/t gold. The project is currently under development with the first gold pour planned for second half 2023. ![]() Mining will be predominantly from underground production from two production centres accessed from the same portal. The project is designed around a 1.0 Mt per annum processing plant, and using a conventional gravity and leaching circuit. The Bellevue Gold Project (Bellevue Gold 100%)īellevue Gold Ltd is developing a high-grade underground gold mine at the Bellevue Gold Project.
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