Post by
Wangotango67 on Dec 01, 2024 9:21pm
TONNE, RESERVE, CONTENT, GRADE, PURITY
1966 - BAYMAG
1966 and diamond core drilling in the early 1970s proved reserves in excess of
50 million tonnes of high-quality magnesite ore.
https://www.baymag.com/about/
That's ------> Magnesite ORE ( not extracted mineral )
1990 - BAYMAG
17.6 million tonnes averaging 92.44 per cent magnesia in the calcined product
(Fieldwork, 1990).
Tonnage switches to Magnesia
Magnesia Formula
Mg(OH)2
1 extra O 2 extra hydrogen vs MgO
Hydrogen weight = 1.007 u
Oxygen weight = 15.999 u
Mg weight = 24.305 u
MgO weight = 40.304 u
Magnesia = 58.317 u
So....
1966 - 50 million tonnes ore
1990 - 17.6 million tonnes magnesia ( added weight )
Current webiste - deposit contains magnesite reserves in excess of 50 million tonnes.
^ ^ ^
There's a diff between raw ore and reserves, right ?
Did extra drilling prove positive ?
Or.... drilling wasn't so good ?
Hard to find info on this subject.
Can Baymag mine all ore ?
Or.... are they inhibited by scaling benches further up mountain or... river nearby ?
Or.... have mined high grade magnesite zones and are into.... dolomites ?
Current tonnage mined per year ------> 150,000 tonnes using 3 calciners
1990 to 2024 = 30 yrs of mining
Just how much tonnage raw or reserve or magnesia reserve is remaining ?
Why post on website 1966 50 million tonnes ore ? ( history yes... but ? )
Why not use current figures ?
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92.44 per cent magnesia in the calcined product (Fieldwork, 1990).
vs
MgO contents of more than 97 %.
Contents..... it a grade after calcing ?
Or.... should it be a purity value after ( LOI ) calcing ?
If Baymags deposit is Magnesite = MgCO3
Their..... magnesite has the carbon and one oxygen loss during calcining.
Perhaps more of a purity figure vs grade.
An opinion.
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Big Questions ?
Why has Driftwood seen resistence ?
Why has West High Yield seen resistence ?
Did you know MGX Driftwood is the East zone ?
MGX also drilled west zone..... not much info on this drill stepout extension ) hmmm
Source Driftwood 43 101
West drilled extension is like a sneak peek -----> knowing how much more deposit extends.
Cheers.....