FM3 firstmac mortgage funding trust no. 4 series 1-2020

N-S Fault 4 below.

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123david321

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04/05/21

21:10

Post #: 52937513
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Originally posted by 123david321: ↑

I've been working on a block model controlled by the N-S faults to come up with a number as the previous method extrapolated too much and was overestimating IMO.

Block sizes are 50m height x 124m width x 100 m length. See pics below to illustrate.

What I've done is multiply intercept interval by grade to get m*g.t then summed all independent intercepts for each block. I then divided by the meters of intercept for each block to get the grade of each block.

I then needed to introduce a confidence factor depending on the length of mineralised intercept for each block. Reason for this is that if only 1m of 1g/t was found in 1 block, you can't assume that the whole block is 1g/t.

The values I used are below. So for each block, ounces are calculated using the grade * 50x124x100 * 2.5 /31.103 then multiplied by the % in table below depending on the intercept length for that block.

Messing around with the values in this table makes a big difference in the output however I think this is pretty balanced. Low intervals per block are assigned low multipliers as there is not enough information nor enough ounces identified from drilling therefore it needs to be diluted significantly. Larger intervals per block give more confidence in the grade and consistency within that block however it's unlikely the whole of that block is mineralised at 100% of the identified grade.

Output is below for each N-S fault.

This may be slightly underestimating but I think it's in the ballpark. I'm expecting MRE to be between 1.7 and 2.2 Moz. Hopefully the eastern flank continues to provide solid results.

Calcs for N-S fault 2. Ounces are in bottom right table.

Calcs for N-S fault 3.

Calcs for N-S fault 4

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N-S Fault 4 below.

FM3 Price at posting: 0.0¢ Sentiment: None Disclosure: Not Held
11 Upvote

7 Great analysis

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N-S Fault 4 below.

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