Hi there SandyC, we are in a slow grind ATM with one shift per day with maybe two shifts later in the month.
SGQ has made reference to Nebo-Babel and features such as layered mafic-ultramafic intrusions and sills and dykes being common features of LIPs. Additionally, they point to the Ni/Cu **bonorite containments at both Nebo-Babel and The Cathedrals Belt.
There is clearly intrusive geology at the Cathedrals Belt and the Transits Belt and the company believes that deep down, a conduit has provided magmatic intrusion capable of hosting Ni and Cu mineralisation.
I found this at mindat.org which is informative re Nebo-Babel. (There are other in depth commentaries on the West Musgrave Project.)
"World-class Ni-Cu-PGE sulphide deposits within the West Musgrave Block (West Musgrave Province); hosted by a **bronorite intrusion.Discovered in 2000.
Located approximately 30 kilometres south south-east of Jamieson. Nebo-Babel is a concentrically zoned shallow north north-west plunging tube-like body of **bronorite intrusion, split and off-set by the Jamieson Fault, separated by one kilometre, and also at different vertical depths. One is called Nebo, the other Babel. They have similar morphologies but are different mineralogically.
Discovered by Western Mining Corporation in 2000, it came under the control of BHP Billiton who took over the company in 2005. It is a major Ni-Cu-PGE discovery of massive and disseminated sulphides, and caused a rush to the area, but subsequent drilling by Western Mining produced more muted results. It is estimated at 392 million tonnes at 0.3% Ni, 0.3% Cu, and 0.18 grams per tonne PGE (2010), with minor cobalt and gold.
Nebo-Babel in total extends 5 kilometres and is 1 x 0.5 kilometres in cross-section.
It is a **bronorite intrusion, with plagioclase, ortho and clinopyroxene, minor olivine, oxides and apatite. Oxide-apatite rich **bronorite occurs at the eastern end of Nebo. Mineralization is mainly confined to the upper parts of the intrusion and consists of disseminated magmatic sulphides, and massive sulphide lenses.
The intrusion is overturned. Country rock is granulite facies granitoid gneiss, with K-feldspar, plagioclase, and quartz making up 80% of the rock, the remainder amphibole, biotite, oxides, apatite and trace orthopyroxene, with sulphur absent.
It is believed the deposit was formed from three distinct magma pulses. The initial one formed the marginal units of the intrusion. The next emplaced the core of the intrusion. The largest and final one resulted in a closed system crystal fractionation to show the mineralization today.
The deposit shows well preserved fabrics and textures, and is zoned with a variably textured leuco-**bronorite outer shell, then mineralised **bronorite, then barren **bronorite, and finally oxide-apatite **bronorite. Ni-Cu-PGE is confined to the first two zones, and occurs as massive sulphide breccias and stringers, and disseminated **bronorite hosted sulphides.
As of 2020 the deposits were acquired by Oz Minerals."
As you can see and no doubt already understand, there are many worthy parallels and therefore I think it is valid for the company to highlight the similarities in this case. It is also interesting and perhaps relevant that Nebo-Babel is North -West plunging.
Cheers
Mulac1
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