attachment 1 mineral resource and ore reserve estimation

Dec 31, 2012· Exploration Results, Mineral Resources and Ore Reserves (JORC Code), December 2004. The Chromite, Vanadium and PGM's Mineral Resource and Ore Reserve Statement at 31 December 2012 is based on the Xstrata Alloys "Procedure for the Estimation of Mineral Resources and Ore Reserves", reference No. 10000027570. Definitions of all


The OK model showed a better performance for grade estimation when compared with the MLP model. Thus, using OK, a total resource of about 12% lower than that of the conventional method, which is currently in use in Itakpe, is obtained.

The JORC (2012 Edition) compliant September 2014 Mineral Resources estimate, summarised above, formed the basis of this Ore Reserve estimate. Ore Reserves open pit were estimated with Micromine 2014, utilising the Lerchs-Grossman optimisation algorithm, using the current mining operation's cost

Oct 10, 2019· Resource/reserve estimation procedures commonly are considered in two categories, empirical and geostatistical. This course is confined to the principal empirical methods of estimation. This is a premium course which has been peer-reviewed by a committee appointed by the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) and the ...

Mineral Resources and Ore Reserves for the end of the 2019 calendar year (CY19). The secondary report purpose is to provide a snapshot of IGO's exploration activities for CY19. IGO reports Exploration Results (ERs), Mineral Resource estimates (MREs) and Ore Reserve estimates (OREs) in accordance with the ASX listing

Contained within the Kwale Mineral Resources are the Kwale Ore Reserves, estimated as at 30 June 201 to be 62Mt at an average 9 HM grade of 3. 8% for 2.3Mt of contained HM. The 2019 Kwale Ore Reserves estimate represents a decrease of 22% in total ore tonnes

A Mineral Reserve is the economically mineable part of a Measured or Indicated Mineral Resource demonstrated by at least a Preliminary Feasibility Study. This Study must include adequate information on mining, processing, metallurgical, economic, and other relevant factors that demonstrate, at the time of reporting, that economic extraction can ...

Understanding the mineralogy and quality characteristics of deposits influences the confidence in subsequent Mineral Resource and Ore Reserve estimation and will in turn assist the Competent Person to select the appropriate cut-off-grade for Mineral Resource reporting.

The Ore Reserves and Mineral Resources for Base Resources Limiteds (ASX & AIM: SE) ( ^Base Resources _ or the ^Company _) owned and operated Kwale Operation as at 30 June 2016 are summarised in Table 1 below. Table 1: 2016 Kwale Mineral Resources and Ore Reserves estimate (Central Dune and South Dune) compared with previously

Reconnaissance Mineral Resource (334): Estimate based on preliminary field inspections, regional geological studies and mapping. • Inferred Mineral Resource (333): Inferred from geological evidence. Tonnage, grade and mineral content can be estimated with low level of confidence. • Indicated Mineral Resource (332): Tonnage, shape, grade

Ore Reserve Estimate EXAMPLE 1 In the first case, the triangular or polygonal prism method may be employed for computing tonnages and grades of ore. With this method each prism of ore is assumed to have the average grade of the drill hole around which it is constructed, and the geometrical construction should be such that this assumption will ...

Jul 10, 2020· Silver Lake Resources (SLR) has increased the mineral resource and ore reserve at the Deflector Gold Copper Project in Western Australia. The Deflector Mineral Resource has increased by 54 per cent, or 80 per cent after FY20 mine depletion, to 1.27 million ounces. The resource grade has increased by 18 per cent to 13.5g/t.

MINERAL ORE RESERVE Case 1. When all holes have positive values, let a, b and c, be the depth of ore in the three holes forming the prism; to find the average depth of the ore influenced by any given hole, use the formula: d = 4a + b + c/6. Then, as one proceeds from hole to hole, b and c should be substituted, thus: 4b + a + c/6 and 4c + a + b/6,

SUMMARY OF MINERAL RESOURCES AND ORE RESERVES Mineral Resources Phu Kham (including KTL) Depletion from mining during 2013 and block model adjustments to marginally mineralised material in contact with the footwall fault account for the changes to the 31 December 2013 Phu Kham Mineral Resource when compared with the 31 December 2012 estimate.

Resources and Risk - A Lender's View, in Mineral Resource and Ore Reserve Estimation – The AusIMM Guide to Good Practice (Ed: A C Edwards), pp511–518 (The Australasian Institute of 2012 Quantitative Kriging Neighbourhood Analysis for the Mining - A Description of …

2019 Mineral Resources and Ore Reserves Statement and Explanatory Notes Page 4 of 56 Carrapateena 2019 Mineral Resources and Ore Reserves Statement and Explanatory Notes As at 30 June 2019 Summary Table 1: Carrapateena Mineral Resources Estimate1 2 3as at 30 June 2019 Envelope Cut-off (SNSR/t A$) Category Tonnes Mt Cu %

NiWest Mineral Resource Estimate 1,2 at 0.8% Ni Cut-off Grade. ... Mineral Resources and Ore Reserves (The JORC Code 2012 Edition) and Chapter 5 of the ASX Listing Rules and ASX Guidance Note 31. NiWest Ore Reserve Estimate 1 at 0.5% Ni cut-off * Columns may not total exactly due to rounding errors. Tonnages are reported as dry tonnage

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 (see below) used for different scenarios dependent upon the ore boundaries, geological deposit geometry, grade variability and the amount of time and money available.

Glacken, I M and Snowden, D V, 2001. Mineral Resource Estimation, in Mineral Resource and Ore Reserve Estimation – The AusIMM Guide to Good Practice (Ed: A C Edwards), pp189-198 (The Australasian Institute of Mining and Metallurgy: Melbourne). 189 Mineral Resource Estimation By I M Glacken1 and D V Snowden2 INTRODUCTION

Exploration Results, Mineral Resources and Ore Reserves (the JORC Code), December 2004. The Chromite, Vanadium and PGM's Mineral Resource and Ore Reserve Statement at 31 December 2011 is consistent with the JORC code and is based on the Xstrata Alloys "Procedure for the Estimation of Mineral Resources and Ore Reserves", reference

Sep 08, 2011· Estimation of a mineral resource is the starting point to successful mine development. A reliable estimate combines good quality and relevant data, competent geological interpretation and a methodology for producing from that data and interpretation, a reliable representation of the mineralized deposit, its geometry, its grade distribution, its metallurgical variability and its density.

Mineral reserves and ore reserves. Mineral reserves (or ore reserves) are resources known to be economically feasible for extraction. Reserves are either Probable Reserves or Proved Reserves.. A Probable Ore Reserve is the part of indicated, and in some circumstances, measured mineral resources that can be mined in an economically viable fashion. It includes diluting material and …

on Mineral Resource Estimation 1. "Mineral Resource Estimation of the Brockman 4 Iron Ore Deposit in the Pilbara Region by Rio Tinto Iron Ore" 2. "Multivariate Iron Ore Deposit Resource Estimation –A Practitioner's Guide to Selecting Methods" 3. "Tropicana Gold Mine, Western Australia –A Case Study of Non-Linear Mineral Resource ...

Larsons Deposit Mineral Resource and Ore Reserve Report December 2013 4 MINERAL RESOURCE ESTIMATE 4.1 RESULTS The Mineral Resource estimate reference date is 31st December 2013. There has been no mining of the Larsons deposit since the previous public report. Table 1 Mineral Resource estimate for Larsons as at 31st December 2013

Targets for Peak Gold Mines and Hera Mine. The Mineral Resource Estimate and Ore Reserve Estimate have been completed in accordance with the guidelines of the JORC Code (2012 Edition). Estimates are reported as at 30 June 2019. The following tables summarise Group Mineral Resource, Ore Reserves and Production Targets. Table 1.

reporting an initial, or an materially changed Mineral Resource and Ore Reserve estimate ... Attachment 1, a draft of the 2012 JORC Code. In addition, this review process presents some other matters detailed in the body of this paper.