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RUMBLE RESOURCES LIMITED — Capital/Financing Update 2013
Sep 22, 2013
65736_rns_2013-09-22_8645ea3b-0b23-4d6b-a718-5eb0fda281cd.pdf
Capital/Financing Update
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23rd September 2013
Gravity modelling identifies a Deep Root Zone prospective for nickel sulphide mineralisation in the Fraser Range
- Rumble has identified a Deep Root Zone to an interpreted mafic intrusive system through 3D inversion modelling of detailed gravity data
- The Deep Root Zone is coincident with Rumble's 'Ring' feature which is a sub circular rimmed magnetic feature visible in airborne magnetic data
- The 'Ring' feature has a broadly similar magnetic response and is of a similar size to Sirius Resources NL 'Eye' which is the host to the Nova and Bollinger nickel-copper sulphide deposits
- Rumble has expanded its Fraser Range Project area to 426 km2 within the Fraser Complex with 2 new recent applications
Rumble Resources Ltd ("Rumble", ASX:RTR) is pleased to announce that the Company has completed 3D inversion modelling on available gravity data with the exciting results now available.
The 3D gravity modelling has indicated that a sub circular gravity high has significant depth extent and is interpreted to represent the Deep Root Zone to a mafic intrusive system. The Deep Root Zone is coincident with a previously identified rimmed sub circular magnetic 'Ring' feature and represents a compelling exploration target for nickel-copper sulphide mineralisation.
The 'Ring' magnetic feature displays a rimmed magnetic response and is also of a similar size to Sirius Resources 'Eye' intrusive body which is the host unit to the Nova and Bollinger nickel-copper massive sulphide deposits.

Figure 1: The Deep Root Zone to a mafic intrusive system identified through 3D gravity inversion modelling. Plan view on the left (looking down) and cross section view on right.
Previous Exploration
Previous exploration on the Company's Fraser Range Project area by Teck Australia Pty Ltd (Teck) between 2007 and 2010 included two detailed Gravity Surveys. Teck also completed 2 diamond drill holes targeting IOCG mineralisation with drilling completed prior to the discovery in 2012 of the Nova nickel-copper massive sulphide deposit by Sirius Resources NL (ASX:SIR). Teck and the Geological Survey of Western Australia completed detailed

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Executives & Management
Mr Shane Sikora CEO
Mr Terry Topping Executive Director
Mr Andrew McBain Non-executive Director
Mr Matthew Banks Non-executive Director
Mr Michael Smith Non-executive Director
Mr David Palumbo Company Secretary
Mr Andrew Jones Exploration Manager


studies on the diamond drill core including geochemistry, petrographic studies and most importantly age dating of the various rock units including the metagabbro rock units that drilling intersected.
The Age dating of the rocks by the Geological Survey of WA indicates the metagabbro rock units at the Fraser Range Project are of a similar age to the Nova Discovery rock units.
Recent 3D modelling of the gravity data indicates that the two holes drilled by Teck failed to intersect the main body (see figure 1) of the large gravity anomaly Deep Root Zone although both holes did intersect metagabbro rock units, the host rock unit to the Nova and Bollinger deposits.

Figure 2: The priority target area is a sub circular gravity high 'ring' with a rimmed magnetic response of a similar size to the Sirius 'eye' intrusive.

Deep Root Zone
Figure 3 is an example of an idealised cross section based on the Russian Norilsk Nickel Sulphide deposits (the worlds largest Nickel Sulphide deposits). Of importance is the feeder dyke known as the Deep Root Zone which has been interpreted as the mafic intrusive system at Rumbles Fraser Range Project see figure 1.
Figure 3 shows the geometry expected, and indicates how basal magmatic Nickel-Copper (Ni Cu PGE) sulphides accumulate.

Figure 3: Schematic cartoon style cross section through the Norilsk Ni-Cu-PGE deposits in Russia.
First Stage Exploration
Rumble is in the final stages of arranging the planned geophysics (Ground EM) program targeting the previously identified rimmed sub circular magnetic 'Ring' feature and the recently discovered Deep Root Zone beneath it. The ground geophysics will determine if sulphide bodies are present within the interpreted mafic/ultramafic body looking to find the conductive Nickel-Copper (Ni-CU-PGE) sulphide mineralisation zones shown in Figure 3. The conductive bodies would become high priority drill targets pursuing massive nickel sulphide bodies. This planned geophysics program is likely to commence early October 2013.
CEO Comment
The CEO of Rumble, Mr Shane Sikora, said "the Fraser Range Project continues to tick all the boxes as we systematically review and expand on the technical information available. Our initial review discovered the previous exploration intersected metagabbro rock units which are also host to the Nova Nickel Copper discovery and significantly the age dating suggests the metagabbro rock units are of similar age to the Nova Discovery rock units. The next stage completed was the 3D gravity modelling which identified a Deep Root Zone below a rimmed sub circular magnetic 'ring' feature of a similar size to the Sirius 'eye' intrusive body".
"In brief we have the same intrusive rock units which are of similar age as the Nova and Bollinger nickel-copper deposits. We now have an interpreted mafic/ultramafic intrusive Deep Root Zone which will be the target of ground based geophysical surveys to identify conductive massive sulphide bodies for eventual drill testing".
Fraser Range Project Expansion
Rumble has acquired two new Exploration Licence Applications to expand the Company's Fraser Range Project presence within the highly prospective Fraser Complex of the Albany-Fraser Tectonic Zone. The new applications expand the Company's Fraser Range Project area to 426 km2 with the project area located on vacant crown land and not subject to any Native Title Claims.


Figure 4: Expanded Fraser Range Project with airborne magnetics as background.
- ENDS –
For further information visit www.rumbleresources.com.au or email [email protected]
About Rumble Resources Ltd
Rumble Resources Ltd is an Australian based exploration company, officially admitted to the ASX on the 1st July 2011. Rumble was established with the aim of adding significant value to its current gold and base metal assets and will continue to look at mineral acquisition opportunities both in Australia and abroad.
Competent Persons Statement
The information in this report that relates to Exploration Results is based on information compiled by Mr Terry Topping, who is a Member of the Australasian Institute of Mining & Metallurgy and the Australian Institute of Geoscientists. Mr Topping is a fulltime employee of Rumble Resources Limited and has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 Edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves". Mr Topping consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.