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general copper ore cut off grade

Solved: 18. Estimate The Unit Profit In Mining And Process ...18. Estimate the unit profit in mining and processing a 0.80% copper ore deposit if the selling price of copper in concentrate is $1.73/kg and overall unit costs are $6.5/ton. Overall recovery is 82%. Calculate the cut-off grade of the copper deposit.Understanding Cut-Off Grade 4 (Tonnage, Grade, and Costs ...Feb 17, 2018· Understanding Cut-Off Grade 4 (Tonnage, Grade, and Costs) or "Why is my mine losing money?" Published on February 17, 2018 February 17, 2018 • 174 Likes • 15 CommentsMining Valuation Lesson: Cut-Off Grade Theory And Practice ...Dec 05, 2011· In other words, the grade that provides the US$46 is the cut-off grade. Let's once again assume that the gold price is $1000 per ounce, which is equal to .Cut Off Grade Calculation OptimizationTable of ContentsTraditional Cutoff Grades in Open Pit MiningHeuristic Cutoff Grade Optimization TechniquesOptimizing The Cutoff Grades By Lane's ApproachAlgorithm for Determining Optimum Cutoff Grades Cutoff grade is defined as the grade that is normally used to discriminate between ore and waste within a given orebody. Although the definition of cutoff grade is very precise, the choice of ...

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Mineral Reserves are reported at a 0.10% Cu cut-off grade. Mineral Reserves are reported using long-term copper, gold, and silver prices of $2.75/lb, $1,250/oz, and $16.50/oz, respectively. To define Mineral Reserves, an average copper process recovery of 80%, gold process recovery of 68%, and silver process recovery of 71%.Updated Resource Estimate Confirms Pebble East as One of ...At a 0.60% copper equivalent cut-off, the newly estimated inferred mineral resources 1 in the Pebble East deposit are: •3.9 billion tonnes grading 0.99% copper equivalent 2, containing 49 billion pounds of copper, 45 million ounces of gold, and 2.8 billion pounds of molybdenum.Break-Even Analysis - How to Calculate the Cut-Off Grade ...Feb 03, 2014· This article about how to calculate the cut off grade is a great resource for investors in individual mining stocks. However, when you are investing in mining stocks through a Stock Based mineral ETF I recommend you to read this article too.. For conducting a mining project's break-even analysis you first need to know about the operational expenses (OPEX).

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Ore grade: An ore grade measures the percentage of copper oxides or sulfides in a rock. A commercial copper deposit will usually contain between 0.5% to 1% copper ore as well as other metals and ...mining part iiThe cut-off grade of an ore is essentially the lowest grade of an ore that is worth mining. If the ore grade is less than the cut-off grade, then a mining company will not make money mining that ore. According to Fellows (2010), the cut-off grade of an ore is one of the main factors in determining the economics of the mine.(PDF) COST ESTIMATION FOR OPEN PIT MINES: TACKLING COST ...(General mine services) ... The type of ore is copper sulphide (Cu. 2. S), ... The complexity of an open pit production scheduling problem is increased by grade uncertainty. A method is presented ...How to Invest in Copper Stocks | The Motley FoolOre grade: An ore grade measures the percentage of copper oxides or sulfides in a rock. A commercial copper deposit will usually contain between 0.5% to 1% copper ore as well as other metals and ...Structural factors in ore position, quality, and cut-off ...History, production, and general geology of the Santa Barbara camp as known from published sources are briefly reviewed. A long known but previously unpublished spatial positioning of ore shoots in a district-scale dome is described, and comments on structural factors in ore pinchouts and ore quality are added.Ore pinchouts occur when the angle of intersection between a vein and bedding ...

Anaconda Mining Declares a Mineral Reserve at the Argyle ...

Aug 04, 2020· The cut‐off grade of 0.56 g/t gold was derived from Anaconda's mining, processing, and general administration costs and process recovery at Point Rousse. This cut‐off grade is the minimum ore grade required to process the ore economically.Cut-off grade determination for the maximum value of a ...g– is the average grade of the ore above cut-off. In the limiting cases the following formulae apply for mining: for processing and for marketing Note the last two terms for the processing and marketing equations are identical in form and in each case the cut-off grade will fall as F declines because the remaining life of the mine is reduced.100 Years of Resource Growth for Copper - Impact of Costs ...Nov 28, 2010· MinEx Consulting Strategic advice on mineral economics & exploration There is a trade-off between tonnes and grade Rio Blanco copper deposit 0% 2% 4% 6% 8% 10% 1 10 100 1000 10000 16 Grade (%Cu-equiv) Resource (million tonnes) Source: MinEx Consulting March 2010 1100 mt @ 0.58% Cu = 6.38 mt Cu 65 mt @ 1.26% Cu = 0.82 mt Cu Lowering the cut-off ...Gold Assaying and Gold Grades - Investing News NetworkThe cut-off grade is the grade of material below which mining is uneconomic. Calculating the cut-off grade involves completing a mini- feasibility study in which all the known and potential costs ...Cutoff grade - WikipediaCut-Off grade is the minimum grade required in order for a mineral or metal to be economically mined (or processed). Material found to be above this grade is considered to be ore, while material below this grade is considered to be waste.. The cut-off grade can be determined through a variety of methods, each of varying complexity.Grade Tonnage Curve: How Far Can It Be Relied Upon?face of variations of the cut-off grade. ... In general, the ... The main economic metal present in the ore is copper and the mineralization can be described as being of the fissural or stockwork type. It is composed of veinlets and100 Years of Resource Growth for Copper - Impact of Costs ...Nov 28, 2010· MinEx Consulting Strategic advice on mineral economics & exploration There is a trade-off between tonnes and grade Rio Blanco copper deposit 0% 2% 4% 6% 8% 10% 1 10 100 1000 10000 16 Grade (%Cu-equiv) Resource (million tonnes) Source: MinEx Consulting March 2010 1100 mt @ 0.58% Cu = 6.38 mt Cu 65 mt @ 1.26% Cu = 0.82 mt Cu Lowering the cut-off ...Learning Goals: -What is an ore deposit?which will help you to decide where to drill. Copper grade is the concentration of copper in the ore rock. To calculate the grade of copper for the sample, geologists use the equation: (amount of copper metal/amount of copper ore rock)*100 2. If a deposit area has 200lbs of copper in 10,000lbs of ore rock, what is the grade? 200/10000*100=2% 3.

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