GUIDELINE TO ASSESSING JORC COMPLIANCE REPORT (ORE RESERVE AND MINERAL RESOURCES) - REPORTING OF EXPLORATION DATA

(Adapted from The JORC Code 2012 Edition, Australasian Code of Reporting Exploration Results, Mineral Resources and Ore Reserve; download JORC Code Template)

In the previous post on "INVESTORS GUIDELINE TO ASSESSING JORC COMPLIANCE REPORT (ORE RESERVE AND MINERAL RESOURCES) - SAMPLING TECHNIQUE AND DATA", the key focus on assessment was on the nature and quality of sampling program adapted. 

The second key criteria in assessing JORC compliance technical reports of ore reserve and mineral resource is the exploration data itself. 

2. Reporting of Exploration Data

  • Mineral tenement and land tenure status

It is important to note the mineral tenement and inherent land tenure status. This includes but not limited to the type of tenement, reference name/number, location and ownership. One should also note any agreements or material issues that are/may be in place with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings.


  • Geology and Exploration done by other parties

There should be geological detailed description of the deposit type, geological setting and type of mineralisation. Other prospecting and exploration work/appraisal done by other parties shall also be acknowledged.


  • Drill hole Information

A summary tabulation of exploration results of key drill hole information including but not limited to the coordinates (location), reduced level (RL) of drill collars, drill dip and azimuth, depth of drill holes and depth of interception. Any exclusions (if) should be noted and justified on the basis that the information is not material.


  • Data aggregation methods

In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (eg cutting of high grades) and cut-off grades are usually Material and should be stated in the technical report including assumptions used for metal equivalent values.


  • Relationship between mineralisation widths and intercept lengths

It is necessary to note the mineralisation widths and intercept lengths. These relationships are particularly important in the reporting of Exploration Results as it clearly correlated to the nature/size and shape of the deposit. Note also if the ore geometry is known with respect to the extent of mineralisation.


  • Diagrams

It is important to illustrate with appropriate  maps and sections drawn to scale.These should include, but not be limited to a plan view of drill hole collar locations and appropriate sectional views indicating intercepts and possible ore geometry.


  • Balanced reporting

The reporting of results should be balanced to avoid confusion, hence both high and low grade should be reported as such may be necessary for blending and compositing.


  • Other substantive exploration data

Other meaningful and material exploration data should be reported including but not limited to: geological observations; geophysical survey results; geochemical survey results; bulk samples; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances.


  • Further work

It is vital and practical that further work on appraisal of the exploration data is reported highlighting areas of possible expansion including the nature and scale of work.


GUIDELINE TO ASSESSING JORC COMPLIANCE REPORT (ORE RESERVE AND MINERAL RESOURCES) - REPORTING OF EXPLORATION DATA GUIDELINE TO ASSESSING JORC COMPLIANCE REPORT (ORE RESERVE AND MINERAL RESOURCES) - REPORTING OF EXPLORATION DATA Reviewed by CEDRICK KAU on January 16, 2018 Rating: 5

Related Articles

2017. Powered by Blogger.