The 2019 Citadel exploration program should be out in the next few weeks.

I was doing some research on Calibre and Magnum without realising they may be a major focus for the 2019 program along with any AEM targets from last year's expanded survey, GT1 follow up and other targets that come up.

Ann: Rio Tinto Citadel Farm-in Project 2018 Exploration Update

dated 11/12/2018 contains this segment
CITADEL PROJECT AND MAGNUM DOME REVIEW
Rio Tinto continues to review the wider Citadel Project area including the Magnum Dome for the identification of new targets. Rio Tinto’s review of the Calibre and Magnum deposits identified significant resource extensional targets along strike and down dip at the Calibre deposit. Activities which remain ongoing include: Generation of a Magnum Dome structural model; and Definition of additional RC and/or diamond drilling targets.
Below are detailed PDFs for compilations of Calibre and Magnum. Not too well organised but hopefully of interest to some.

CALIBRE GEOLOGY REVIEW.pdf

AZY MAGNUM DEPOSIT.pdf

CALIBRE
IMO this will be the main target unless some left field discovery comes along.

Cartoon of possible drill targets. [Note the orientation is chosen for display purposes - see north - grid and magnetic arrows]

1. The Northern zone at depth (to ?4-500m below surface) and across strike is an obvious target with grades and widths greater than many at the southern on SW EIS targets. Could add (600x200x200x2.5 ~~60Mt at 1-1.5g/t Au eq) at a wild estimate to more than double the existing resource.
2. EIS 2017 drilling intersected a broad zone of veining and low grade mineralisation in the last hole of the programme. This may be a new zone that reflects a section of a GAIP anomaly.
3. The Southern zone is open to the SW though grades seemed to be decreasing.
4. There is a long linear magnetic anomaly which may not have been well tested. The 4NW trend was probably closed off by late 2015 work but magnetic trend continues to NW so a few wide spaced holes. 4SE hasn't been tested?? So could be interesting to see if the Northern Zone is related to the magnetics or coincidentally follows that trend in which case magnetics are a red herring.
5. New targets from detailed analysis of structure, geophysics, vector geochem alteration etc etc.

Gradient array IP on airmag 1st Vertical derivative Plus ?all RC/Diamond and perhaps all Aircore/Rab drilling shown.
With Havieron as a model where previous drilling came close but missed this well mineralised area probably deserves a few more well targeted holes

MAGNUM

• At present IMO a much lower priority area than Calibre.
• AZY give dimensions of 2 Km long, 400m wide, 600m deep but mineralization is 'limited/scattered' within this volume. The "best" intersection was 14.07 g/t Au over 15m from 464m.
• The main host is a a shallow dipping magnetic **bro with steep dipping structurally controlled mineralisation/alteration/veining that also extends into the hosting sediments.
• The Magnum **bro is apparently not differentiated so cannot be compared to other **bro hosted deposits such as Mt Charlotte, Argo, Bombora, ?Colomac etc.
• There are multiple **bro zones and the local structure is complex. There were **bro's mentioned at Calibre as well though no details.
• The Magnum GAIP anomaly in the above image is open to the SSW and continues weakly to the NNW.
• Not an easy target IMO.