grade tonnage curve in mining

  • Mining TerminologyHawkeye Gold Diamond Inc.

    A mining company will proceed with the cost of a feasibility study generally once it has proved continuity of its ore deposits confirmed by samplings and or drilling on a relatively detailed grid that allows for fairly precise determination of tonnage density mineral and metal content and is that part of the orebody that economic viability

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  • Cut-off grade estimationQueensMineDesignWiki

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  • Assessment of Uncertainty in Grade-Tonnage Curves of a

    Assessment of Uncertainty in Grade-Tonnage Curves of a O. Erten M. S. Kizil B. B. Beamish The University of Queensland School of Mechanical and Mining Engineering Brisbane Australia

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  • Grade Tonnage CurveSummary

    Dec 14 2012 · Figure 5 Grade-tonnage tables and graphs for indicated and inferred resources This shows conceptual grade-tonnage relationships only and is derived from Inferred and Indicated Resources for which economic viability of realising tonnage above any given grade cut-off has not been assessed at this time. 0.00 1.00 2.00 3.00 4.00 5.00 6.00-500 000.00

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  • SRK News #51 SRK Consulting

    A fundamental concept of geostatistics that is often overlooked or misunderstood in resource estimation during the early project stage is the relationship between the global grade tonnage curve and the quality of the local block by block estimate.

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  • SRK News #51 SRK Consulting

    A fundamental concept of geostatistics that is often overlooked or misunderstood in resource estimation during the early project stage is the relationship between the global grade tonnage curve and the quality of the local block by block estimate.

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  • Grade tonnage curveCube Consulting

    © 2017 Cube Consulting Pty Ltd. All Rights Reserved. Terms of Use Privacy Policy Contact Us

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  • Mineral resource estimationWikipedia

    Mineral resource estimation is used to determine and define the ore tonnage and grade of a geological deposit from the developed block model. There are different estimation methods used for different scenarios dependent upon the ore boundaries geological deposit geometry grade variability and the amount of time and money available.

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  • Grade ore deposit Britannica

    Other articles where Grade is discussed mining Delineation often referred to as its grade. Grade may exhibit considerable variation throughout a deposit. Moreover there is a certain grade below which it is not profitable to mine a mineral even though it is still present in the ore. This is called the mine cutoff grade. And if the material

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  • Grade Tonnage Graphs

    A grade tonnage curve combines two or three equations together to produce one of the more important tools for analysing the data indicating the potential amount of material obtained when varying the cut-off grade applied. Leapfrog Geo can display multiple grade tonnage curves on

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  • Selection and Grade-Tonnage Relationships SpringerLink

    In practice blocks are selected according to their estimated value and not according to their true unknown value. In order to avoid serious errors in calculating a grade-tonnage curve we must be able to define clearly the relationships existing

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  • Grade-Tonnage Curves Ore-Waste Selection and Planning

    Jan 01 1977 · 1. 1 Contouring drill hole values In daily practice the only i t e m considered in a grade-tonnage curve is a 303 cut-off grade. Typically o n e has a m i n e plan with a n u m b e r of drill h o l e intersections and t h e n one starts c o n t o u r i n g these values.

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  • Grade Tonnage Curve How Far Can It Be Relied Upon

    The grade tonnage curve is widely used in the mining industry. From geology and mining planning to management and investment areas they are used for economic and financial analysis being probably one of the most important tools for representing variations in the characteristics of a deposit in function of cutoff grades.

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  • BLOCK MODEL KNOWLEDGE FOR MINING ENGINEERS

    estimates of data such as element grade density and other geological or engineering entity values. Figure 1 A block model of an ore body coloured by grade (shell and slice) The cells of a block model are arranged in an XYZ grid system and the cells may be of uniform or of irregular size. Deswik software does not do grade estimations for the

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  • Micromine 2020.5NEW Grade Tonnage CurveYouTube

    The NEW Grade Tonnage Curve features include optional configurations for mass and grade as well as a report data table which summarizes the quantities in the

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  • Enabling Great Thinkers • Snowden

    The predicted grade tonnage curve analysis makes change of support a breeze allowing you to quickly generate grade tonnage curves at any given block size without the need to import a block model. This not only applies to mining professionals but also those around the mining industry in supporting roles who attend our introductory courses.

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  • Forecasting the grade-tonnage curves and their

    Forecasting grade-tonnage curves at the Mehdiabad deposit Boll. Geof. Teor. Appl. 58 219 a point-support location x is denoted by Z k (x) the associated Gaussian transform is denoted by Y k (x) while the transformation function denoted by φk is such that Z k (x) = φk (Yk (x)) (1)In practice knowing experimentally the distribution of the variable of interest Z

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  • Mineral resource estimationWikipedia

    Mineral resource estimation is used to determine and define the ore tonnage and grade of a geological deposit from the developed block model. There are different estimation methods used for different scenarios dependent upon the ore boundaries geological deposit geometry grade variability and the amount of time and money available.

    Get Price
  • Risk quantification in grade-tonnage curves and resource

    Jul 19 2011 · The risk quantification in grade-tonnage curves is critical for capital investment in mining projects. Geostatistical simulations for orebodies can be used to obtain grade-tonnage curves and determine uncertainty and risk assessments. Applying these in multi-element deposits can be a difficult practice as the related attributes using the traditional co-simulation

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  • Estimation of the potential production rate

    As seen in the graphs on the right it was found that the optimal production rate increases with both the tonnage and grade of the deposit. A higher gold price resulted in a higher production rate. The production rate was also dependent on the expected growth rate of gold prices with a higher growth rate resulting in a lower production rate.

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  • Estimation of the potential production rate

    As seen in the graphs on the right it was found that the optimal production rate increases with both the tonnage and grade of the deposit. A higher gold price resulted in a higher production rate. The production rate was also dependent on the expected growth rate of gold prices with a higher growth rate resulting in a lower production rate.

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  • Mineral Deposit ValueHow to Calculate the Potential

    Before you can calculate the potential mineral deposit value you first need to gather some specific data regarding the ore body and the individual drill results.. This required data can be found in the mining company s press releases in which they announce their drill results.Make sure that this data is announced according to the guidelines of National Instrument 43-101 (i.e.

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  • Selection and Grade-Tonnage Relationships SpringerLink

    In practice blocks are selected according to their estimated value and not according to their true unknown value. In order to avoid serious errors in calculating a grade-tonnage curve we must be able to define clearly the relationships existing

    Get Price
  • Grade-Tonnage Curves Ore-Waste Selection and Planning

    Jan 01 1977 · A f t e r Williamson and Mueller ( 1 9 7 6 ) . and t h e m e a n grade o f that ore tonnage. For e x a m p l e t h e curves o f Fig. 2 2 3 for a cut-off of 0 . 3 0 will be reconstructed from Formery s chart. The only requirement is that the logarithmic variance of the small b l o c k s w e can select at mining be k n o w n t o be equal t o 0 . 1 .

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  • Risk quantification in grade-tonnage curves and resource

    Jul 19 2011 · The risk quantification in grade-tonnage curves is critical for capital investment in mining projects. Geostatistical simulations for orebodies can be used to obtain grade-tonnage curves and determine uncertainty and risk assessments. Applying these in multi-element deposits can be a difficult practice as the related attributes using the traditional co-simulation

    Get Price
  • The Distributions and Relationships of Grade and Tonnage

    The tonnage and grade of a second type of sulfide deposit which is associated with small orogenic intrusions were also found to be lognor- mally distributed. The median nickel grade of these deposits is 0.60 percent and their median tonnage is 1.27xl06 metric tons these variables are statistically independent.

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  • Grade Tonnage Graphs

    A grade tonnage curve combines two or three equations together to produce one of the more important tools for analysing the data indicating the potential amount of material obtained when varying the cut-off grade applied. Leapfrog Geo can display multiple grade tonnage curves on

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  • The world s top 10 highest-grade copper minesMINING

    This mine has both high-grade and high-tonnage ore reserves/resources that put this operation well above its peers. With 4.8 copper grade in reserves Kinsenda is the second highest-grade

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  • The Modifying FactorsCRIRSCO

    grade–tonnage curve. This curve depicts various grade-tonnage scenarios which provide different economic returns (different business scenarios). SELECTING THE BEST BOUNDARIES To convert ore commodities into a mine business we need to draw an envelop where ore tonnages ore grades and other ore attributes allows generation of

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  • Grade Tonnage Curve How Far Can It Be Relied Upon

    In the mining industry from the geology and mine planning areas to management the grade tonnage curve has been applied in economic and financial analysis probably being one of the most important tools used in determining the volume and grade of material in face of variations of the cut-off grade. The grade tonnage curve is usually calculated with the in-situ resources or

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  • USGS Mineral Resources On-Line Spatial Data

    Location type mineralogy name tonnage and grade and geological setting for 120 deposits of this type. Asbestos mines prospects and occurrences in the continental US Location mineralogy name development status for 913 historic mines prospects and occurrences of asbestos and fibrous amphiboles.

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  • Vulcan Geology ModulesMaptek

    • Inverse distance grade estimation. • Creation of customised reports including grade tonnage curves. • Dynamic visualisation of single or multiple planes through • Advanced reserve reporting with ability to break down by Support for a large number of blocks with options to add delete or modify variables in real time.

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  • Grade Tonnage Graphs

    A grade tonnage curve combines two or three equations together to produce one of the more important tools for analysing the data indicating the potential amount of material obtained when varying the cut-off grade applied. Leapfrog Geo can display multiple grade tonnage curves on

    Get Price
  • Assessment of Uncertainty in Grade-Tonnage Curves of a

    Assessment of Uncertainty in Grade-Tonnage Curves of a O. Erten M. S. Kizil B. B. Beamish The University of Queensland School of Mechanical and Mining Engineering Brisbane Australia

    Get Price
  • Mineral resource classificationWikipedia

    Mineral resource classification is the classification of mineral resources based on an increasing level of geological knowledge and confidence. In an effort to achieve a standard set the classifications representative bodies from Australia Canada South Africa the USA and the UK reached a provisional agreement in 1997 on the definitions of each of the various mineral

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  • How to Maximize Grade and Recovery Curve- Case of Study

    How to Maximize Grade and Recovery Curve- Case of Study. However both customers requirements and mining profit require to maximize the grade and recovery together. I m Ames a mineral processing engineer. For example if we have a feed of 1000 ton that contains 50-ton Chalcopyrite 200 ton Fe2O3 plus 200 ton SiO2 and 100 ton

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  • (PDF) Comparison of cut-off grade models in mine planning

    As mentioned earlier geological input included is usually obtained from a grade-tonnage curve o f the deposit. The g rade-to nnage distrib ution shown

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