Acadian Mining

QA/QC Protocols

• Diamond Drill Core Processing Protocol
• Fire Assay Procedure

(Note: The Au-SCR21 method description from ALS Minerals' website refers to a standard 1000g spilt of the pulverized material for the Au-SCR21. For Acadian Mining, they actually perform a full metallic screen on the entire pulverized material - the drill core average weight is 2 kg and each sample is crushed and pulverized in entirety and screened for the Au-SCR21)

Diamond Drill Core Processing Protocol

The following protocol is for the processing of diamond drill core for Acadian Mining drill programs.

Core Rotation

• Prior to logging, core is rotated using cleavage and other vergence features (e.g. minor folds) as a reference frame so that core is orientated in the core box as it is interpreted to have been in the hole. Drilling is typically perpendicular to regional fold trends; therefore, cleavage and the location of the core, with respect to regional folds, is generally known. Therefore, interpretation of how core is to be oriented is generally straight forward.

Logging

• When the core is logged, the principal features recorded include: 
      
  • Major and minor stratigraphy;
  • All structures (bedding, cleavage, crenulation cleavage, minor folds, mineral and intersection lineations). Structural data is measured relative to the core axis and or other structural data using a core protractor, or in real space using an oriented core holder;
  • Veins, alteration, and any other features deemed significant; 
  • All visible gold is described, including size, character, host and associations.
  
  

Sample Layout

• Sample intervals are determined by the person logging the core. Sample intervals will honour features considered significant to grade.
• The principal sample boundary reflect major stratigraphic boundaries. For example, at Fifteen Mile Stream the boundaries between the Orient, MacLean and Seigel stratigraphic units are principal sampling boundaries.
• Secondary sampling boundaries are established by features such as vein abundance, alteration (such as arsenopyrite, carbonate), or major internal lithological variances.
• Sample intervals will be demarked by core chocks and sample tags inserted under the core at the top of the sample interval.
• A sample length of 1 metre will be targeted; however, the length will be governed by features mentioned above. A maximum of 1.5 metres and minimum of 0.25 metres will be enforced for individual samples.

Photography

• All core is photographed using a digital camera. Photography is of good quality, so that details of stratigraphy, veining etc., is discernable.

Magnetic Susceptibility

• Magnetic susceptibility of the core is taken for each of the sample intervals.

UV Light

• A UV light is run over the core, with all occurrences of scheelite documented.

Core Splitting

• A horizontal line is marked on the core parallel to the core box, and a mark designating the top side of the core is to be made on each piece of core.
• Core is cut using a diamond saw along the line marked on the core and then replaced in the box in the same position as it was, using the mark designating the top side of the core. 

Sampling

• All core is sampled according to the sample intervals established and written on the tags inserted by the logger.
• The top portion of the core is sampled.
• A three tag sample book is used; One tag with the interval information remains in the book, one tag with the interval information remains in the core box at the start of the sample interval, and one tag with no information goes in the sample bag.
• Plastic sample bags are tied with a wire tie.
• Sample bags are placed in 20 litre plastic buckets and sealed with self-sealing tops.

The following samples are inserted into the sample stream for QA/QC purposes:

• Standards: A standard sample is inserted every 20 samples using the same tags as used for samples. Standards are selected from an assortment of different standards that represent a range of grades. Selection of standards will be random.


• Blanks: A blank sample representing barren meta-sandstone from the Goldenville Formation is inserted following samples containing visible gold and following "mineralized intervals"; mineralized intervals are defined by logging with examples being the Orient, McLean and Seigel mineralized zones at Fifteen Mile Stream.


• Field Duplicates: Duplicates consisting of 1/2 core samples representing half of the previously sampled core are taken every 20 samples. 

Security:

• Core is kept secure at all times.
• Core is removed from the drill site by Acadian staff, or the drill contractor, and taken to a secure site which is locked and access is controlled.

Rick Horne
Chief Geologist
Acadian Mining

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