SOMETHING INTERESTING - Performed a few othwer searches trying to find if another thought along the same idea with,
Nickel, Copper hidden in chlorite - solid solution.
To my surprise, i found this... which is near same ideology.
The idea that the nickel and copper were alreasdy there in solid solution - morphed later with an alteration. As mentioned in previous post, the clear chloritic cores could be young in nature, hadn't yet devloped the incubation of, ( ites ) to form. Keep in mind, how chlorite can morph to
biotites in the presence of, feldspar.
PAGE - 59 - In 1951, Falconbridge Nickel Mines Limited diamond drilled 4 holes on the showings, and in 1952, Ontario Nickel Mines Limited put down 2 diamond-drill holes (Thomson et al. 1957, p.98-99). The grade of mineralization in the holes ranged from 0.21 percent nickel and 0.44 percent copper in very disseminated material, to 3.82 percent nickel and 2.38 percent copper in massive sulphides.
Polished section examination of the disseminated sulphides, which generally constitute less than 10 percent of the rock, shows that they consist mainly of pyrrhotite (80 percent) and chalcopyrite (20 percent) with very minor pyrite. The sulphides replace silicates and chalcopyrite appears to replace pyrrhotite. It is possible that the sulphides formed by alteration of silicate minerals which originally contained copper and nickel in solid solution.
4-Modal analyses of rocks of the Bruce, Espanola, and Serpent Formations.. .Chart B, back pocket ... contained copper and nickel in solid solution ----------------------------------------------------------------------------------------------------------------------------
Also... i've mentioned how magnesium spikes occur along side high nickel and chromium values in historical drills... But, iron and sulphur spikes also occur. Whcih keeps one at bay, trying to nail exactly what influences the nickel and copper. Could swing either way, aluma and mags or irons and sulphurs. ( when i say aluma - i'm really referring to all salt metals )
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In the same link above - ( espanola formation )
it does mention how the limestones contain the biotite and pyrrhotites, and well...
Wouldn't that be something if the - nickel - originated in the limestones - and later with a chloritic influence morphs to the ( mica ites ) ???
Somethnig to think about.
Would be nice to see what the few cores tapped into aside of Scadding mine, in the Brisco limestones. Hole 20 046 saw some nickel and cobalt and copper and that hole... tapped into the limestones. Go figure.
Can't quite nail it.. .but, there's something different about the - feldspar quartz and how chlorite replaces the potassium, and the onset of, biotites - magnesium presence with aluminum, suddenly other minerals manifest in biotites, pyrrhotites, pyrites, aresopyrites. And, sulphur and irons. I don't know... it's surely stumped me. Maybe it's a mixture of all minerals, in which nature morphs them and arrives at - nickel, copper, etc....But if i came across, feldspars, with chloride or sulphide colorations, i'd be all over it.. .lol - i think the feldspars sheets - would produce more than, quartz crystals.
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Correction -
What we
didn't have was... good assay testing on the ores like the process mentioned above - like Inomin's - looking for hidden nickel in - serpentines/chlorites.