23 December 2019
GRANTS CU-AU ASSAYS AND COINCIDENT MAGNETIC/GRAVITY IOCG TARGETS
HIGHLIGHTS
-
Assays confirm Proterozoic Cu-Au ("IOCG") mineralisation at Grants as follows: GRDD001:
o 9.0m at 1.1% Cu and 0.2 g/t Au from 36.0m including 1.7m at 3.8% Cu and 0.5 g/t Au from 40.3m; and
o 1.6m at 1.2% Cu from 108.4m
GRDD002:
o 3.4m at 1.1% Cu from 112.0m;
o 1.5m at 1.3% Cu from 154.0-155.9m; and o 1.0m at 1.1% Cu from 99.0m - Drilling plus geophysical surveys indicate that Grants potentially represents distal hydrothermal outcropping mineralisation vectoring towards undercover coincident magnetic/gravity IOCG targets at Fuso and Paul's Find
Dreadnought Resources Limited ("Dreadnought") is pleased to announce assay results from the WA Government Exploration Incentive Scheme ("EIS") co-funded diamond drilling at the Grants Cu-Au Target in the West Kimberley. Narrow high-grade mineralisation was intersected in line with historic drilling in the 1950s. In addition, wider lower grade zones of mineralisation were confirmed between the high-grade lodes.
Multi-element assays support the potential for Grants to be part of a wider IOCG system. Recently completed airborne magnetics and ground gravity surveys have identified Fuso and Paul's Find as high priority coincident magnetic/gravity targets for drill testing in 2020.
Dreadnought Managing Director, Dean Tuck, commented "Dreadnought's drill and geophysical programs at and around Grants, have confirmed the presence of IOCG copper mineralisation and the potential for a wider IOCG system. This drilling, coupled with recent field work including geophysical surveys, has highlighted that Grants may be a vector towards blind magnetic/gravity IOCG targets such as Fuso and Paul's Find. Based on this work our priority drill targets for 2020 will include Fuso and Paul's Find."
Figure 1: Highly mineralised section of drillcore from GRDD001 ~40.5m down hole depth which was part of
the 40.3m-40.7m interval which graded 9.1% Cu, 0.9 g/t Au, 1.6 g/t Ag and 0.1% Co.
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Diamond Drill Holes GRDD001 and GRDD002
Both diamond holes were drilled at a -60 degree angle with an azimuth of 315 degrees and were located between holes drilled by Western Mining Corporation ("WMC") in the late 1950s. GRDD001 was drilled to a depth of 151.1m and GRDD002 was drilled to a depth of 194m, and both holes interesected multiple mineralised zones (Figures 2 and 3):
Main Zone (27.6m to 45.0m) - 17.4m interval grading 0.7% Cu consists of quartz-sulphidebreccia, quartz-sulphideveins and intense silica and chlorite alteration within fine grained and graphitic pelites. Includes 9m at 1.1% Cu from 36m and 1.7m at 3.8% Cu from 40.3m;
2nd Zone (59.6m to 63.2m) - 3.6m fault breccia with minor quartz-pyrite veins within interbedded pelites and intermediate to felsic volcanics;
3rd Zone (83.0m to 84.5m) - 1.5m interval grading 0.3% Cu consists of brecciated quartz-chalcopyrite within intermediate to felsic volcanics;
4th Zone (106.3m to 111.0m) - 4.7m interval grading 0.7% Cu consists of quartz-chalcopyrite veined graphitic pelites with dissiminated chalcopyrite. Includes 1.6m at 1.2% Cu from 108.4m; and
Porpyrhy Zone (117.7m to 126.7m) - 9m felsic porpyhry dyke with trace quartz-pyrite-chalcopyriteveins.
Figure 2: Cross Section of Grants showing the location of multiple mineralised lodes in GRDD001.
Zone 1 (99.0m to 116.5m) - 17.5m interval grading 0.5% Cu | |
consisting of a swarm of quartz-sulphide veins. The interval | |
is comprised primarily of chalcopyrite with lesser pyrite and | |
a deformed and brecciated package of coarse to fine | |
grained pelites which have undergone silica and chlorite | |
alteration. Includes 1m at 1.1% Cu from 99m and 3.4m at | |
1.1% Cu from 112m; | |
Zone 2 (122.4m to 123.9m) - 1.5m interval consisting of | |
quartz-sulphide veins with minor pyrite and subordinate | |
chalcopyrite in deformed and altered sediments; | |
Zone 3 (143.8m to 156.5m) - 12.7m interval grading 0.5% | |
Cu, consisting of a swarm of quartz-sulphide veins. The | |
interval is similar in composition to Zone 1. Includes 1.9m | |
at 1.3% Cu from 154m; and | |
Porphyry Zone (179.2m to 191.2m) - 12.0m interval of | |
felsic porphyry with no visible mineralisation. | |
Figure 3: Cross Section of Grants showing multiple mineralised | |
lodes in GRDD002. | |
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Both holes were similar to historic WMC drilling in that they intersected multipe zones of near vertical mineralisation dominated by coarse to fine grained and occasionally graphitic pelites with interbedded intermediate to felsic volcanics and a porphyry dyke. Mineralisation was confined to zones of intense brecciation and veining with dominant silica, chlorite and sulphide alteration. Elevated Co, Bi, As, Ag supports IOCG style of mineralisation.
Figure 4: Map of Grants showing the location of recent drilling, 1950s WMC drilling and nearby rock chip results.
IOCG at Tarraji-Yampi
As part of the field campaigns, Dreadnought has been undertaking airborne magnetic, ground gravity and orientation geochemical surveys over the wider Tarraji-Yampi area. This work is motivated by the comparisons of the lithostructural and geochemical signature of Tarraji-Yampi to other IOCG terranes such as Tennant Creek Inlier (ex. Gecko, Peko) and Cloncurry District (ex. Brumby, Ernest Henry). (Figure 8).
In these terranes, IOCG deposits occur as coincident magnetic-gravity anomalies. Fuso and Paul's Find both have strong coincident magnetic-gravity anomalies and represent highly attractive IOCG targets (see Figure 6 and 7). Deposits are also likely to form topographic lows and to not outcrop. With this model, the outcropping quartz copper lodes like Grants and Wilsons could represent distal hydrothermal mineralisation and work as a vector towards mineralisation undercover such as Fuso and Paul's Find.
This work highlighted Fuso and Paul's Find as highly attractive IOCG targets for drilling in 2020 (see Figures 6 and 7).
Figure 5: Map of Tarraji-Yampi showing the location of priority targets
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Background on the Fuso and Paul's Find Targets
Fuso and Paul's Find are the first two priority targets to result from the recent airborne magnetics and ground gravity surveys.
Fuso is one of the largest and strongest magnetic anomalies within Tarraji-Yampi at 1,200m x 700m with a core gravity anomaly of 500m x 400m. Both have an apparent south to south-easterly plunge. The magnetic signature is interpreted to be related to intense iron rich alteration, either as magnetite or pyrrhotite and the gravity signature conceptually represents the mineralised lode.
Paul's Find is represented by an intense magnetic low and gravity high bullseye feature with dimensions of ~300m x 200m. The magnetic low is interpreted to be remnant magnetisation associated with a mineralised lode.
Both targets are high priority and will be drill tested in 2020. On-going review of geophysical and geochemical datasets may generate additional targets for drill testing.
Figure 6: Plan view map of Fuso and Paul's Find showing a background image of RTP magnetics with the
coincident gravity anomalies overlain.
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Figure 7: Plan view of the recently acquired airborne magnetics data (L) Reduced to Pole (RTP) and ground gravity (R) Bouguer 1st vertical derivative highlighting priority target locations.
Figure 8: Example of coincident magnetic (top) and gravity (middle) and the resultant inversion modelled
bodies (bottom) from Prominent Hill, Brumby and Ernest Henry Proterozoic Cu-Au deposits.
from Austin and Foss 2012. Rich, attractive and extremely dense: A geophysical review of Australian IOCGs.
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Concluding Comments
Dreadnought would like to take the opportunity to thank and acknowledge the assistance of our stakeholders including the Department of Defence, the Dambimangari Aboriginal Corporation, and the Department of Mines, Industry Regulation and Safety for their support in getting us to this point. For further information please refer to previous ASX announcements:
• 11 June 2019 | High grade assays from the Grants Target |
- 18 September 2019 Tarraji-Yampi drilling to commence in September 2019
• | 17 October 2019 | Drilling Commenced at Grants Cu-Au Target |
• | 29 October 2019 | Multiple Mineralised Zones at Grants Cu-Au Target |
- 8 November 2019 Multiple Mineralised Zones in second hole at Grants Cu-Au Target
RECENT AND UPCOMING NEWSFLOW
December: Drilling program at Illaara completed - Lawrence's Find and CRA Homestead
December: Assay results from drilling at Grants
December: Surface geochemical results from Chianti-Rufina
December: Surface geochemical and geophysical results from Grants and Tarraji
23 December: General Meeting and placement of $170,000 of shares to directors if approved by shareholders
January: Assay results from Illaara 2020 drilling - Lawrence's Find and CRA Homestead
February/March: Illaara VMS and nickel sulphide drill target generation work including surface geochemistry and geophysics
February/March: Commence drilling at Illaara Central, Metzke's Find, Lawrence's Find and CRA Homestead
June quarter: Commence drilling program over priority base metals targets at Illaara
Dreadnought looks forward to reporting a strong news flow for the remainder of 2019 and into 2020.
~Ends~
For further information please contact: | |
Dean Tuck | Nick Day |
Managing Director | Company Secretary |
Dreadnought Resources Limited | Dreadnought Resources Limited |
E:dtuck@dreadnoughtresources.com.au | E:info@dreadnoughtresources.com.au |
The announcement is authorized for release to the market by Dean Tuck the Company's Managing Director
Competent Person's Statement
The information in this announcement that relates to geology and exploration results and planning was compiled by Mr. Oliver Judd, who is a Member of the AusIMM, exploration manager and shareholder of the Company. Mr. Judd has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Mr. Judd consents to the inclusion in the report of the matters based on the information in the form and context in which it appears.
The Company confirms that it is not aware of any new information or data that materially affects the information in the original reports, and that the forma and context in which the Competent Person's findings are presented have not been materially modified from the original reports.
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
INVESTMENT HIGHLIGHTS
Tarraji-YampiNi-Cu-Au Project
Dreadnought controls the second largest land holding in the highly prospective West Kimberley, Western Australia. The main project area is located only 85kms from Derby and has been locked up as a Defence reserve since 1978, The area was only recently opened under the Commonwealth Government's co-existence regime that balances Defence's needs with the requirements of others including Aboriginal groups, the resources industry, pastoralists and State Governments.
Tarraji-Yampi presents a rare first mover
opportunity with known outcropping mineralisation and historic workings from the early 1900s which have seen no modern exploration.
Three styles of mineralisation occur at Tarraji- Yampi including: volcanogenic massive sulphide ("VMS"); Proterozoic Cu-Au ("IOCG"); and
magmatic sulphide Ni-Cu-PGE. Numerous high priority nickel, copper and gold drill targets have been identified from recent VTEM surveys, historical drilling and surface sampling of outcropping mineralisation.
Illaara Au-VMS Project
Illaara is located 160km northwest of Kalgoorlie in the Yilgarn Craton and covers 75kms of strike along the Illaara Greenstone Belt. Illaara is prospective for typical Archean mesothermal lode gold deposits and Cu-Zn VMS mineralisation.
Dreadnought has consolidated the Illaara Greenstone Belt mainly through an acquisition from Newmont Goldcorp ("Newmont"). Newmont defined several camp-scale targets which were undrilled due to a change in corporate focus. Prior to Newmont, the Illaara greenstone belt was held predominantly by iron ore explorers and has seen minimal gold and base metal exploration since the 1990s. Illaara contains several drill ready gold targets, the NWA nickel sulphide prospect and known VMS horizons which could produce exciting drill targets with the application of modern exploration technology.
Rocky Dam Au-Cu-Zn Project
Rocky Dam is located 45kms east of Kalgoorlie in the Eastern Goldfields Superterrane of Western Australia. Rocky Dam is prospective for typical Archean mesothermal lode gold deposits and Cu-Zn VMS mineralisation. Rocky Dam has known gold and VMS occurrences with drill ready gold targets based on 1990s mineralised gold intercepts which have not been followed up.
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Table 1: Drill holes completed and underway at the Grants Prospect. Coordinates are UTMz51, GDA 94
Hole ID | Easting | Northing | RL | Dip | Azimuth | EOH | Status | ||||||||||||||||||||||
GRDD001 | 628810 | 8168260 | 50 | -60 | 315 | 151.1m | Completed | ||||||||||||||||||||||
GRDD002 | 628934 | 8168361 | 50 | -60 | 315 | 194.0m | Completed | ||||||||||||||||||||||
Table 2: Significant drill intercepts (>0.1% Cu, >0.1 g/t Au) from the Grant's Target | |||||||||||||||||||||||||||||
Hole ID | From | To | Interval | Cu | Au | ||||||||||||||||||||||||
27.6m | 45.0m | 17.4m | 0.7% | 0.1 g/t | |||||||||||||||||||||||||
Incl. | 36.0m | 45.0m | 9m | 1.1% | 0.2 g/t | ||||||||||||||||||||||||
GRDD001 | Incl. | 40.3m | 42.0m | 1.7m | 3.8% | 0.5 g/t | |||||||||||||||||||||||
and | 83.0m | 84.5m | 1.5m | 0.3% | - | ||||||||||||||||||||||||
and | 106.3m | 111.0m | 4.7m | 0.7% | - | ||||||||||||||||||||||||
Incl. | 108.4m | 110.5m | 2.1m | 1.2% | - | ||||||||||||||||||||||||
99.0m | 116.5m | 17.5m | 0.5% | - | |||||||||||||||||||||||||
Incl. | 99.0m | 100.0m | 1.0m | 1.1% | 0.2 g/t | ||||||||||||||||||||||||
GRDD002 | Incl. | 106.0m | 107.0m | 1.0m | 2.2% | 0.3 g/t | |||||||||||||||||||||||
Incl. | 112.0m | 115.4m | 3.4m | 1.1% | - | ||||||||||||||||||||||||
and | 143.8m | 156.5m | 12.7m | 0.5% | - | ||||||||||||||||||||||||
Incl. | 154.0m | 155.9m | 1.9m | 1.3% | - |
JORC Code, 2012 Edition - Table 1 report template
Section 1 Sampling Techniques and Data
JORC TABLE 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria | JORC Code explanation | Commentary | ||||
Sampling | • | Nature and quality of sampling (e.g. cut | Diamond drilling was utilised to produce a sample | |||
techniques | channels, random chips, or specific | of core which was then cut in half to produce a | ||||
specialised industry standard measurement | sample approximately 2-4kg in weight. The sample | |||||
tools appropriate to the minerals under | was then sent to the laboratory where it was | |||||
investigation, such as down hole gamma | crushed, pulverised and sub-sampled to produce a | |||||
sondes, or handheld XRF instruments, etc.). | 50g charge for fire assay (gold) and also a sample | |||||
These examples should not be taken as | for multi-element analysis. | |||||
limiting the broad meaning of sampling. | The gravity survey was undertaken by Atlas | |||||
• | Include reference to measures taken to | |||||
ensure sample representivity and the | Geophysics Pty. Ltd. between 16th October - 5th | |||||
appropriate calibration of any measurement | November 2019. The data processed by Southern | |||||
tools or systems used. | Geoscience Consultants Pty. Ltd. (SGC) (Perth) | |||||
• Aspects of | the | determination of | using a the AAGD07 gravity datum and GRS80 | |||
mineralisation that are Material to the Public | ellipsoid heights. Bouger anomaly data was | |||||
Report. | calculated using a correlation density of | |||||
• In cases where 'industry standard' work has | 2.67g/cm3. | |||||
been done this would be relatively simple | Location of data points - Two Gravity/GNSS | |||||
(e.g. 'reverse circulation drilling was used to | ||||||
control stations 201912200001 "Chianti" and | ||||||
obtain 1 m samples from which 3 kg was | ||||||
201912200002 "Little Tarraji River" were used to | ||||||
pulverised to produce a 30 g charge for fire | ||||||
Dreadnought Resources Limited | www.dreadnoughtresources.com.au | |||||
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au | |||||
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Criteria | JORC Code explanation | Commentary | |||||||||||
assay'). In other cases, more explanation | control all field observations throughout the | ||||||||||||
may be required, such as where there is | survey. Gravity control was established via loops | ||||||||||||
coarse gold that has inherent sampling | with existing Australian Fundamental Gravity | ||||||||||||
problems. | Unusual | commodities | or | Network (AFGN) control station 1964910128 "Old | |||||||||
mineralisation | types | (e.g. | submarine | Airport Hanger - Derby WA". | |||||||||
nodules) may warrant disclosure of detailed | Data Spacing and distribution - gravity stations | ||||||||||||
information. | |||||||||||||
were collected on 50 x 200 m spaced grid | |||||||||||||
Equipment - one Scintrex CG-5 Autograv Gravity | |||||||||||||
Meter, one CHC Nav i70+ GNSS Rover receiver | |||||||||||||
and one CHC Nav i70+ GNSS Base receiver. | |||||||||||||
Drilling | • | Drill type (e.g. core, reverse circulation, | Diamond drilling was undertaken by Hagstrom | ||||||||||
techniques | open-hole hammer, rotary air blast, auger, | Drilling Pty Ltd. utilising a Marooka - track mounted | |||||||||||
Bangka, sonic, etc.) and details (e.g. core | rig. Core size was HQ3 and NQ3 (Triple tube). | ||||||||||||
diameter, triple or standard tube, depth of | Typically, the first half of the hole was drilled using | ||||||||||||
diamond tails, face-sampling bit or other | HQ3 and once in competent ground was switched | ||||||||||||
type, whether core is oriented and if so, by | to NQ3. Core was orientated utilising a Boart | ||||||||||||
what method, etc.). | Longyear Tru Core Orientation Tool. | ||||||||||||
Drill sample | • | Method of recording and assessing core and | Diamond core recovery was initially recorded by the | ||||||||||
recovery | chip sample recoveries and results | driller and eventually by the site geologist during | |||||||||||
assessed. | logging. | ||||||||||||
• | Measures taken to maximise sample | Recovery is measured each metre and recorded | |||||||||||
recovery and ensure representative nature | digitally. | ||||||||||||
of the samples. | Overall core recovery was excellent, 95-100% | ||||||||||||
• | Whether a relationship exists between | throughout within fresh rock and typically between | |||||||||||
sample recovery and grade and whether | 60-100% through weathered rock. | ||||||||||||
sample bias may have occurred due to | It should be noted that some of the upper | ||||||||||||
preferential loss/gain of fine/coarse material. | mineralised zones within GRDD001 are weathered | ||||||||||||
and therefore recovery was between 60-100%. | |||||||||||||
It is unknown if a relationship exists between | |||||||||||||
sample recovery and grade and also if a bias exists | |||||||||||||
due any loss of material. | |||||||||||||
Logging | • | Whether core and chip samples have been | Diamond core was stored in core trays at the rig and | ||||||||||
geologically and geotechnically logged to a | then cleaned, reassembled and marked up with | ||||||||||||
level of detail to support appropriate Mineral | metre marks and an orientation line by the | ||||||||||||
Resource estimation, mining studies and | Dreadnought site geologist. | ||||||||||||
metallurgical studies. | Data | on | the | rock-type, deformation, | colour, | ||||||||
• Whether logging is qualitative or quantitative | |||||||||||||
structure, | alteration, veining, sulphides, | oxidation | |||||||||||
in nature. Core (or costean, channel, etc.) | |||||||||||||
state, minerals and recovery were recorded. | |||||||||||||
photography. | |||||||||||||
• The total | length and | percentage of | the | Logging is both qualitative, quantitative and semi- | |||||||||
relevant intersections logged. | quantitative in nature. | ||||||||||||
Sub-sampling | • | If core, whether cut or sawn and whether | HQ and NQ core was cut in half using an industry | ||||||||||
techniques and | quarter, half or all core taken. | standard automated core saw by ALS laboratories | |||||||||||
sample | • | If non-core, whether riffled, tube sampled, | (Perth). | ||||||||||
preparation | rotary split, etc. and whether sampled wet or | Field | duplicates | in the form of half core were | |||||||||
dry. | |||||||||||||
collected at a rate of approximately 1:30, typically | |||||||||||||
• For all sample types, the nature, quality and | |||||||||||||
targeting the mineralised zones. OREAS certified | |||||||||||||
appropriateness of the sample preparation | |||||||||||||
registered materials (CRM's) were inserted at a rate | |||||||||||||
technique. | |||||||||||||
of approximately 1:30 through the mineralised | |||||||||||||
• | Quality control | procedures adopted for | all | ||||||||||
zones also. | |||||||||||||
sub-sampling | stages | to | maximise | ||||||||||
QAQC samples were submitted to the laboratory | |||||||||||||
representivity of samples. | |||||||||||||
• Measures taken to ensure that the sampling | within the sample string and given unique sample | ||||||||||||
is representative of the in-situ material | ID's. | ||||||||||||
collected, | including for instance results | for | Core | cutting, sampling, sample preparation and | |||||||||
field duplicate/second-half sampling. | |||||||||||||
Dreadnought Resources Limited | www.dreadnoughtresources.com.au | ||||||||||||
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au | ||||||||||||
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Criteria | JORC Code explanation | Commentary | |||||||||||
• Whether sample sizes are appropriate to the | assaying was all undertaken by ALS laboratories | ||||||||||||
grain size of the material being sampled. | (Perth). | ||||||||||||
A ~3kg sample was oven dried to 105DegC and | |||||||||||||
then pulverised to 85% passing 75um (Code: PUL- | |||||||||||||
23) | |||||||||||||
All samples were analysed for gold by 50g Fire | |||||||||||||
Assay with ICP-AES Finish (Code: Au-ICP22) | |||||||||||||
Mineralised zones were analysed by a 25g, four | |||||||||||||
acid digest, for 41 multi-elements using ICP-MS | |||||||||||||
(Code: ME-MS61) | |||||||||||||
Ore grade Copper samples were analysed by ICP- | |||||||||||||
AES with a HF-HNO3-HCIO4 digest, HCI Leach | |||||||||||||
(Code: Cu-OG62) | |||||||||||||
None-mineralised zones were analysed using a | |||||||||||||
semi-quantitative XRF scan for 11 elements (Code: | |||||||||||||
pXRK-30) | |||||||||||||
The sample preparation technique is industry | |||||||||||||
standard and deemed suitable for the style and | |||||||||||||
materials being assayed. | |||||||||||||
Quality control for maximising representivity of | |||||||||||||
samples included sample weights, insertion of field | |||||||||||||
duplicates and laboratory duplicates. | |||||||||||||
Quality of assay | • The nature, quality and appropriateness of | Fire assay is considered a 'total assay technique' | |||||||||||
data and | the assaying and laboratory procedures | for the analysis of gold. | |||||||||||
laboratory tests | used | and whether | the | technique | is | MS-ICP61multi-element is considered a 'near total | |||||||
considered partial or total. | |||||||||||||
assay technique'. | |||||||||||||
• For geophysical tools, spectrometers, | |||||||||||||
handheld XRF instruments, etc., the | Cu-OG62 is considered a 'near total assay | ||||||||||||
parameters used in determining the analysis | technique' | ||||||||||||
including | instrument | make | and | model, | pXRF is considered a 'partial technique' - No pXRF | ||||||||
reading times, calibrations factors | applied | ||||||||||||
results are reported in this report. | |||||||||||||
and their derivation, etc. | |||||||||||||
• Nature of quality control procedures adopted | Duplicates and CRM's are inserted into mineralised | ||||||||||||
(e.g. standards, blanks, duplicates, external | zones at a rate of approximately 1:30 for QAQC | ||||||||||||
laboratory checks) and whether acceptable | purposes. | ||||||||||||
levels | of | accuracy | (i.e. lack | of | bias) | and | Levels of precision of assay and quality controls put | ||||||
precision have been established. | |||||||||||||
in place are deemed acceptable. | |||||||||||||
Verification of | • The verification of significant intersections by | Significant intersections have been verified by | |||||||||||
sampling and | either independent or alternative company | senior dreadnought personnel. | |||||||||||
assaying | personnel. | Logging and sampling were recorded directly into a | |||||||||||
• The use of twinned holes. | |||||||||||||
digital | logging | system, verified | and eventually | ||||||||||
• Documentation of primary data, data entry | |||||||||||||
stored in an offsite database. | |||||||||||||
procedures, data verification, data storage | |||||||||||||
No twinning has been undertaken. | |||||||||||||
(physical and electronic) protocols. | |||||||||||||
• Discuss any adjustment to assay data. | No adjustments to any assay data have been | ||||||||||||
undertaken. | |||||||||||||
Location of data | • Accuracy and quality of surveys used to | Collar position was recorded using a handheld | |||||||||||
points | locate drill holes (collar and down-hole | Garmin GPS (+/- 3m). | |||||||||||
surveys), trenches, mine workings and other | GDA94 Z51s is the grid format for all drilling xyz | ||||||||||||
locations | used | in | Mineral | Resource | |||||||||
data reported. | |||||||||||||
estimation. | |||||||||||||
• Specification of the grid system used. | Azimuth and dip of the drill hole was recorded after | ||||||||||||
• Quality and adequacy of topographic control. | the completion of the hole using a down hole EZ | ||||||||||||
Track | single | shot camera. A | reading was |
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Criteria | JORC Code explanation | Commentary | |
undertaken every 30th metre with an accuracy of +/- | |||
0.5deg. | |||
Gravity data points were recorded using a DGPS | |||
with an accuracy of +/- 1cm | |||
Data spacing and | • | Data spacing for reporting of Exploration | See drill table for hole positions. |
distribution | Results. | Data spacing at this stage is not suitable for Mineral | |
• Whether the data spacing and distribution is | |||
Resource Estimation | |||
sufficient to establish the degree of | |||
geological and grade continuity appropriate | No sample compositing has been applied in | ||
for the Mineral Resource and Ore Reserve | reporting. | ||
estimation procedure(s) and classifications | |||
applied. | |||
• | Whether sample compositing has been | ||
applied. | |||
Orientation of | • | Whether the orientation of sampling | Drilling was undertaken at -60°, a Sub- |
data in relation to | achieves unbiased sampling of possible | perpendicular angle to the interpreted strike and dip | |
geological | structures and the extent to which this is | of any interpreted mineralised structures or | |
structure | known, considering the deposit type. | lithologies. Lithologies generally are steeply dipping | |
• | If the relationship between the drilling | (~80-90°) and thus true widths of mineralisation will | |
orientation and the orientation of key | have to be extrapolated from any assay results. | ||
mineralised structures is considered to have | |||
introduced a sampling bias, this should be | |||
assessed and reported if material. | |||
Sample security | • | The measures taken to ensure sample | All samples from collection at rig through to |
security. | submission at the laboratory have been under the | ||
supervision of Dreadnought personnel or sub- | |||
contractors associated with the company. All | |||
samples are sealed in polyweave bags and stored | |||
in bulka bags for storage and transport. | |||
Audits or reviews | • | The results of any audits or reviews of | The drilling program has been reviewed by senior |
sampling techniques and data. | company personnel. | ||
The gravity date collection and post program | |||
processing was undertaken by Geophysical | |||
Consultancy Southern Geoscience Consultants | |||
Pty. Ltd. (SGC) Perth. | |||
Section 2 Reporting of Exploration Results
(Criteria in this section apply to all succeeding sections.)
Criteria | JORC Code explanation | Commentary | ||||||||||
Mineral tenement | • Type, reference name/number, location | The Tarraji-Yampi Project consists of 4 granted | ||||||||||
and land tenure | and ownership including agreements or | (E04/2315, E04/2508, E04/2557, E04/2572) and | ||||||||||
status | material issues with third parties such as | 1 pending exploration Licenses (E04/2608) | ||||||||||
joint ventures, | partnerships, | overriding | The Tarraji tenement (E04/2315) is an 80/20 JV | |||||||||
royalties, native | title | interests, | historical | |||||||||
between IronRinger (Tarraji) Pty Ltd and | ||||||||||||
sites, wilderness or | national | park and | ||||||||||
Whitewater Resources Pty Ltd. | ||||||||||||
environmental settings. | ||||||||||||
• The security of the tenure held at the time | The Yampi Tenements (E04/2508, E04/2572, | |||||||||||
of reporting along with any known | E04/2557, E04/2608) are 100% owned by | |||||||||||
impediments to obtaining a licence to | IronRinger (Tarraji) Pty Ltd | |||||||||||
operate in the area. | IronRinger (Tarraji) Pty Ltd is a wholly owned | |||||||||||
Dreadnought Resources Limited | www.dreadnoughtresources.com.au | |||||||||||
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au | |||||||||||
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Criteria | JORC Code explanation | Commentary | ||||||
subsidiary of Dreadnought. | ||||||||
E04/2315, E04/2508, E04/2572, E04/2557 are | ||||||||
located within the Yampi Sound Training Area | ||||||||
(YSTA) which is freehold land owned by the | ||||||||
Commonwealth Government and | administered | |||||||
by the Department of Defence. Being freehold | ||||||||
Commonwealth Land, there is no Native Title | ||||||||
over these tenements. | ||||||||
E04/2608 is partly located within the YSTA and | ||||||||
partly on Vacant Crown Land which has Native | ||||||||
Title claim by the Warra Combined (NNTT | ||||||||
Number 2901 | ||||||||
Exploration done by | • Acknowledgment and appraisal of | Regional mapping, basic stream sediment, soil | ||||||
other parties | exploration by other parties. | sampling and limited diamond drilling was | ||||||
completed by WMC in the 1950s. | ||||||||
The YSTA was off limits to exploration from 1978- | ||||||||
2013. | ||||||||
Geology | • Deposit type, geological setting and style | The Tarraji-Yampi Project is located within the | ||||||
of mineralisation. | Hooper Complex which is a Proterozoic Mobile | |||||||
Belt in the West Kimberley. | ||||||||
The Hooper Complex has known occurrences of | ||||||||
Cu-Zn-Pb-Ag VMS mineralisation within the | ||||||||
Marboo Formation, magmatic Ni-Cu-PGE | ||||||||
mineralisation in the Ruins Dolerite and later | ||||||||
stage | Proterozoic | Cu-Au | mineralisation | |||||
associated with significant structures and late | ||||||||
stage intrusions. | ||||||||
Drill hole information | • A summary of all information material to | An overview of the drilling program is given within | ||||||
the understanding of the exploration | the text above | |||||||
results including a tabulation of the | ||||||||
following information for all Material drill | ||||||||
holes: | ||||||||
o easting and northing of the drill hole | ||||||||
collar | ||||||||
o elevation or RL (Reduced Level - | ||||||||
elevation above sea level in metres) | ||||||||
of the drill hole collar | ||||||||
o dip and azimuth of the hole | ||||||||
o down hole length and interception | ||||||||
depth | ||||||||
o hole length. | ||||||||
• If the exclusion of this information is | ||||||||
justified on the basis that the information | ||||||||
is not Material and this exclusion does | ||||||||
not detract from the understanding of the | ||||||||
report, the Competent Person should | ||||||||
clearly explain why this is the case. | ||||||||
Data aggregation | • In reporting Exploration Results, | Length weighted averaging utilised a cut off grade | ||||||
methods | weighting | averaging | techniques, | of 0.1% Cu. | ||||
maximum | and/or | minimum grade | Higher grade intercepts were reported using a | |||||
truncations (e.g. cutting of high grades) | ||||||||
0.3% Cu lower cut off, incorporating up to 1m of | ||||||||
and cut-off grades are usually Material | ||||||||
internal | waste, with a | cumulative average of | ||||||
and should be stated. | ||||||||
greater than 1.0% Cu. | ||||||||
• Where aggregate intercepts incorporate | ||||||||
Lower grade intervals were reported using a 0.1% | ||||||||
short lengths of high-grade results and | ||||||||
longer lengths of low grade results, the | Cu cut off, incorporating up to 3m of internal | |||||||
procedure | used for | such | aggregation | waste with a cumulative average of greater than |
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
Criteria | JORC Code explanation | Commentary | |||||||
should be stated and some typical | 0.3% Cu | ||||||||
examples | of such aggregations should | No metal equivalents were reported. | |||||||
be shown in detail. | |||||||||
• The assumptions used for any reporting | |||||||||
of metal equivalent values should be | |||||||||
clearly stated. | |||||||||
Relationship | • | These | relationships | are | particularly | At Grants, the geometry of mineralisation is | |||
between | important in the reporting of Exploration | understood from mapping and drilling. The | |||||||
mineralisation widths | Results. | intersection angle of drilling is sub-perpendicular | |||||||
and intercept lengths | • If the geometry of the mineralisation with | to the mineralisation and therefore reporting | |||||||
respect to the drill hole angle is known, its | widths are over-reporting the true width of | ||||||||
nature should be reported. | mineralisation. | ||||||||
• If it is not known and only the down hole | |||||||||
lengths are reported, there should be a | |||||||||
clear statement to this effect (e.g. 'down | |||||||||
hole length, true width not known'). | |||||||||
Diagrams | • | Appropriate | maps and sections | (with | Refer to figures within this report. | ||||
scales) and tabulations of intercepts | |||||||||
should be included for any significant | |||||||||
discovery being reported These should | |||||||||
include, but not be limited to a plan view | |||||||||
of drill hole collar locations and | |||||||||
appropriate sectional views. | |||||||||
Balanced reporting | • | Where | comprehensive | reporting | of all | The accompanying document is a balanced | |||
Exploration Results is not practicable, | report with a cautionary note. | ||||||||
representative reporting of both low and | |||||||||
high grades and/or widths should be | |||||||||
practiced to avoid misleading reporting of | |||||||||
Exploration Results. | |||||||||
Other substantive | • Other exploration data, if meaningful and | Both the geophysical and drilling data is reported | |||||||
exploration data | material, should be reported including | upon in this report. | |||||||
(but | not | limited | to): | geological | |||||
observations; geophysical survey results; | |||||||||
geochemical | survey | results; | bulk | ||||||
samples - size and method of treatment; | |||||||||
metallurgical test results; bulk density, | |||||||||
groundwater, | geotechnical | and | rock | ||||||
characteristics; potential deleterious or | |||||||||
contaminating substances. | |||||||||
Further work | • The nature and scale of planned further | Further geophysical and drilling programs are | |||||||
work (e.g. tests for lateral extensions or | planned for the 2020 exploration season at the | ||||||||
depth extensions or large-scalestep-out | project. | ||||||||
drilling). | |||||||||
• Diagrams clearly highlighting the areas of | |||||||||
possible extensions, including the main | |||||||||
geological | interpretations | and | future | ||||||
drilling areas, provided this information is | |||||||||
not commercially sensitive. | |||||||||
Dreadnought Resources Limited | www.dreadnoughtresources.com.au |
Suite 5, 16 Nicholson Road, Subiaco WA 6008 | info@dreadnoughtresources.com.au |
PO Box 572, Floreat WA 6014 | +61 (0) 428 824 343 |
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Dreadnought Resources Ltd. published this content on 23 December 2019 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 23 December 2019 14:45:07 UTC