Here is the link if you guys are interested. This is very relevant as DKO owned one of this tenement (Sepeda) while some other under application.
https://www.researchgate.net/profil...af1e32da0000000.pdf?origin=publication_detail
Some highlight derived from the paper:
From Clause 3: Covas do Barroso (Name of Sepeda in the paper) : spodumene-rich aplite-pegmatite dykes intruding the meta-sedimentary Silurian aged sequence. Resources evaluated.
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From Clause 3.2 :
The Li-rich aplite-pegmatite dykes show a spatial distribution of 3 sub-types (LIMA et al, 2003):
- spodumene-rich aplite-pegmatite dykes and sills are dominant at N and NE regions; ( I believe this I the right location of Sepeda owned by DKO)
- petalite-rich are dominant at SW and
- lepidolite-rich occur at NW regions.
From Clause 3.2 :
By the HMS tests a glass grade spodumene concentrate with 5% Li 2 O was obtained with a recovery of 517 th Industrial Minerals International Congress Barcelona, 28-31Março2004, 81,5% Li 2 O: feeding concentrations bigger then 2% gave a high grade spodumene with 6% Li 2 O and a recovery of 60% but when attempting to obtain >7% Li 2 O concentrates the recovery fell to 30%. Fromthe spodumene flotation tailings was obtained a feldspar concentrate with >17% alumina and > 6% alkalis (Na/K ~ 4/3) with a low iron content.
I can't recall if anyone posted this before, but feel free to discuss, your opinion will be appreciated.
Cheers,
Joseph
Here is the link if you guys are interested. This is very...
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