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EAGLE MOUNTAIN MINING LIMITED — Regulatory Filings 2020
Dec 21, 2020
64839_rns_2020-12-21_df4d322b-b745-4461-a179-2112c4725c95.pdf
Regulatory Filings
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A S X A n n o u n c e m e n t | 2 2 D e c e m b e r 2 0 2 0
11.55% Cu, 273 g/t Ag and 5.41 g/t Au over 1.5m in Breccia in drill hole WT-20-10 at Oracle Ridge
-
The above intercept, at 348.7m downhole starts a 13.3m thick zone averaging:
o2.43% Cu, 52.6 g/t Ag and 0.94 g/t Au -
45m overall diluted mineralised zone from 317m averages 1.33% Cu, 25.0 g/t Ag and 0.38 g/t Au
-
Hole WT-20-10 intercepted some of the highest-grade copper, gold and silver encountered in all drilling at Oracle Ridge
-
These breccia occurrences illustrate the potential for a deeper porphyry system below the Leatherwood granitic intrusive
-
Drilling in January 2021 re-prioritised to target the new discovery zones of high-grade brecciaveins encountered in holes WT-20-10 and WT-20-06
Eagle Mountain Mining CEO, Tim Mason, commented:
“These exceptional assay results and style of mineralisation further underpins our belief in the potential for a larger mineralised system at Oracle Ridge. The discovery of these breccia zones in drillholes WT20-06 and WT-20-10 is a major milestone in our understanding of the larger system that feeds the skarn. The high-grade breccia zone in hole WT-20-10 appears to cut through the Leatherwood granitic intrusive near the contact with the limestone skarns. Breccia zones have the potential to run deep and the very high-grade nature of mineralisation encountered thus far set these breccias as priority exploration targets. We are excited for drilling to resume in early January after the Christmas break.”
Eagle Mountain Mining Managing Director, Charlie Bass, also comments:
“Intrusive breccias often act as ore guides in many districts as a result of their close association of these features with ore due to hydrothermal activity along structural zones, such as faults and dikes. These breccias are often pipe-like but could be up to 500m in depth or 100’s of metres in strike and dip dimensions. Not all breccias are necessarily mineralised, but in our case the two different breccias encountered in drill holes WT-20-06 and WT-20-10 in the vicinity of a possible larger fault system is very encouraging and points towards a deeper mineralising system that could sit below the Leatherwood granitic intrusive.
Eagle Mountain Mining Limited ( ASX:EM2 ) (“ Eagle Mountain ”, the “ Company ”) is pleased to announce assay results from its recently commenced drilling program at the Company’s 80% owned Oracle Ridge Mine Project (“Oracle Ridge”) in Arizona, USA.
Assay results from WT-20-10 have been received and are reported in this announcement.
Page 1 of 12
Table 1 – Summary of reported significant intersections at a 1% Cu Cut-off
| Hole ID | From | To | Width | Cu | Ag | Au |
|---|---|---|---|---|---|---|
| [m] | [m] | [m] | [%] | [g/t] | [g/t] | |
| WT-20-10 | 319.3 | 321.0 | 1.7 | 3.98 | 42.1 | 0.71 |
| 328 | 332 | 4.0 | 1.75 | 26.38 | 0.37 | |
| 343 | 344 | 1.0 | 4.89 | 132 | 0.47 | |
| 348.7 | 362 | 13.3 | 2.43 | 52.6 | 0.94 | |
| Including | 348.7 | 350.2 | 1.5 | 11.55 | 273 | 5.41 |
The above intercepts also fall within a broader zone of mineralisation as follows:
Table 2 – Overall Mineralised Zone at a 0.6% Cu Cut-off
| Hole ID | From | To | Width | Cu | Ag | Au |
|---|---|---|---|---|---|---|
| [m] | [m] | [m] | [%] | [g/t] | [g/t] | |
| WT-20-10 | 317.1 | 362 | 44.9 | 1.33 | 25.01 | 0.38 |
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----- Start of picture text -----
Breccia and high-grade Breccia hosted mineralisation in
mineralisation in hole WT-20-06 * hole WT-20-10
2.95m at 6.76% Cu, 63.5g/t Ag and 1.5m at 11.55% Cu, 273g/t Ag and
0.87g/t Ag 5.41g/t Au within a broader zone of
45m at 1.33% Cu, 25g/t Ag and
0.38g/t Au
----- End of picture text -----
Figure 1 – Summary of currently completed and planned drillholes (See announcement dated 18 November 2020 for details on hole WT-20-06)
WT-20-10
WT-20-10 tested the eastern extension of the mineralised zone of 15.1m @ 1.72% Cu, 16.87g/t Ag, 0.38g/t Au recently encountered in hole WT-20-05 at the Leatherwood-skarn contact.
Page 2 of 12
Prospectivity for a deeper copper-bearing system has improved as a result of veins and breccias crosscutting the Leatherwood granitic intrusive, suggesting that some of the copper ore emplaced occurred after the Leatherwood was formed. For approximately 45m from 317m downhole, visual disseminated copper mineralisation was observed including high-grade veins and breccias up to 1.5m thick (Figure 2).
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----- Start of picture text -----
Massive bornite
Breccia with
bornite matrix
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Figure 2 – High-grade bornite-chalcopyrite mineralisation hosted by a vein-breccia within the Leatherwood intrusive (Hole WT-20-10, 349m downhole depth). This interval assayed 11.55% Cu, 273 g/t Ag and 5.41 g/t Au.
Eagle Mountain’s quality control procedures flagged the assay results of two standard samples outside of normally accepted variance. Due to the size and variability in assays for the mineralised zone, the Company will hold discussions with the well-regarded assay laboratory that has been doing the assaying. Re-analysis of some or all of these samples may be required. If required, re-analysis is not expected to have a material impact on the values reported, in particular for the higher grade samples.
Page 3 of 12
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Figure 3 – Cross section showing location of WT-20-10 which observed mineralisation in veins and breccias up to 1m thick, cross cutting the Leatherwood from 317m for 45m. Also WT-20-11 and WT-20-05 with significant intercepts.
Table 3 - Summary table of drill holes at Oracle Ridge
| Hole ID | Easting | Northing | Elevation | Dip | Azimuth | Depth |
|---|---|---|---|---|---|---|
| [m] | [m] | [m] | [◦] | [◦] | [m] | |
| WT-20-01 | 524771 | 3593296 | 1908 | 50 | 080 | 73.2 |
| WT-20-02 | 524771 | 3593296 | 1908 | 47 | 030 | 326.7 |
| WT-20-03 | 524437 | 3593062 | 2102 | 62 | 235 | 335.3 |
| WT-20-04 | 524513 | 3592882 | 2105 | 58 | 267 | 377.3 |
| WT-20-05 | 524507 | 3592571 | 2096 | 55 | 191 | 401.4 |
| WT-20-06 | 524507 | 3592571 | 2096 | 47 | 210 | 369.1 |
| WT-20-07 | 524507 | 3592571 | 2096 | 45 | 235 | 342.3 |
| WT-20-08 | 524507 | 3592571 | 2096 | 63 | 210 | 198.4 |
| WT-20-09 | 524506 | 3592570 | 2096 | 63 | 210 | 334.7 |
| WT-20-10 | 524507 | 3592571 | 2096 | 55 | 170 | 398.2 |
| WT-20-11 | 524507 | 3592571 | 2096 | 50 | 194 | 370.9 |
| WT-20-12 | 524507 | 3592571 | 2096 | 45 | 198 | 413.6 |
| WT-20-13 | 524574 | 3592664 | 2090 | 45 | 250 | 396.2 |
| WT-20-14 | 524513 | 3592882 | 2105 | 65 | 270 | 371.2 |
| WT-20-15 | 524513 | 3592882 | 2105 | 60 | 250 | 367.9 |
| WT-20-16 | 524437 | 3593062 | 2102 | 55 | 248 | n/a |
Page 4 of 12
Table 4 - Summary table of significant intersection at Oracle Ridge during 2020 drill program
| Hole ID | From | To | Width | Cu | Ag | Au |
|---|---|---|---|---|---|---|
| [m] | [m] | [m] | [%] | [g/t] | [g/t] | |
| WT-20-01 | Hole abandoned | |||||
| WT-20-02 | No Significant Intersection(NSI) | |||||
| WT-20-03 | 184 | 187.18 | 3.18 | 1.80 | 20.30 | 0.12 |
| 192.43 | 193.87 | 1.44 | 1.47 | 13.25 | 0.08 | |
| 197.13 | 201.06 | 3.93 | 1.43 | 11.25 | 0.14 | |
| WT-20-04 | 184.94 | 189.5 | 4.56 | 5.28 | 50.70 | 0.77 |
| Including | 186.28 | 187.21 | 0.93 | 13.05 | 127.00 | 0.32 |
| 236.95 | 238.61 | 1.66 | 1.44 | 11.05 | 0.16 | |
| 289 | 290.9 | 1.9 | 1.33 | 17.20 | 0.19 | |
| 293.96 | 297.61 | 3.65 | 1.96 | 19.38 | 0.16 | |
| WT-20-05 | 313.9 | 329 | 15.1 | 1.72 | 16.87 | 0.38 |
| Including | 313.9 | 317.35 | 3.45 | 1.89 | 15.97 | 0.35 |
| Including | 321.29 | 329.7 | 8.41 | 2.46 | 25.09 | 0.56 |
| WT-20-06 | 210 | 249 | 39 | 1.17 | 10.26 | 0.23 |
| Including | 210 | 212.95 | 2.95 | 6.76 | 63.51 | 0.87 |
| Including | 218.29 | 219.2 | 0.91 | 2.61 | 20.80 | 0.59 |
| Including | 225.37 | 234.62 | 9.25 | 1.19 | 9.51 | 0.21 |
| Including | 245.43 | 249 | 3.57 | 2.18 | 19.49 | 0.89 |
| WT-20-07 | 264.56 | 265.81 | 1.25 | 1.09 | 5.04 | 0.09 |
| 269.02 | 272.6 | 3.58 | 1.35 | 5.12 | 0.08 | |
| 311.67 | 312.39 | 0.72 | 1.55 | 13.15 | 0.32 | |
| WT-20-08 | Hole abandoned | |||||
| WT-20-09 | 175.29 | 178.14 | 2.85 | 1.38 | 10.85 | 0.17 |
| 260 | 264.77 | 4.77 | 1.21 | 13.05 | 0.20 | |
| WT-20-10 | 319.3 | 321.0 | 1.7 | 3.98 | 42.1 | 0.71 |
| 328 | 332 | 4 | 1.75 | 26.38 | 0.37 | |
| 343 | 344 | 1 | 4.89 | 132 | 0.47 | |
| 348.7 | 362 | 13.3 | 2.43 | 52.6 | 0.94 | |
| Including | 348.7 | 350.2 | 1.5 | 11.55 | 273 | 5.41 |
| WT-20-11 | 275.23 | 276.58 | 1.35 | 9.14 | 52.5 | 0.69 |
| 285.59 | 294 | 8.41 | 2.80 | 18.75 | 0.61 | |
| Including | 285.59 | 291 | 5.41 | 3.56 | 23.54 | 0.81 |
| WT-20-12 | Assayspending | |||||
| WT-20-13 | Assayspending | |||||
| WT-20-14 | Assayspending | |||||
| WT-20-15 | For Submission | |||||
| WT-20-16 | Completingdrilling |
Page 5 of 12
For further information please contact:
Tim Mason Mark Pitts BEng, MBA, GAICD B.Bus, FCA, GAICD Chief Executive Officer Company Secretary [email protected] [email protected]
Jane Morgan Investor and Media Relations [email protected]
This Announcement has been approved for release by the Board of Eagle Mountain Mining Limited
COMPETENT PERSON STATEMENT
The information in this document that relates to new Exploration Activities is based on information compiled by Mr Fabio Vergara and Mr Brian Paull who are both Members of The Australasian Institute of Mining and Metallurgy (MAusIMM) and have sufficient experience relevant to the activity which they are undertaking to qualify as a Competent Persons as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code 2012). Mr Vergara is the Chief Geologist and Mr Paull Principal Geologist of Eagle Mountain Mining Limited and consent to the inclusion in this document of the information in the form and context in which it appears. Mr Vergara and Mr Paull hold shares and options in Eagle Mountain Mining Limited.
Where the Company references historic exploration results including technical information from previous ASX announcements including 25 May 2020, JORC Table 1 disclosures are included within them. The Company confirms that it is not aware of any new information or data that materially affects the information included in those announcements, and all material assumptions and technical parameters underpinning the results within those announcements continue to apply and have not materially changed. In addition the form and context in which the Competent Persons findings are presented have not been materially modified from the original reports.
EAGLE MOUNTAIN MINING LIMITED
Eagle Mountain is a copper-gold explorer focused on the strategic exploration and development of highly prospective greenfields and brownfields projects in Arizona, USA.
Arizona is at the heart of America’s mining industry and home to some of the world’s largest copper discoveries such as Bagdad, Miami and Resolution, one of the largest undeveloped copper deposits in the world.
Follow the Company developments through our website and social media channels
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Website https://eaglemountain.com.au/
Twitter https://twitter.com/eagle_mining
LinkedIn https://www.linkedin.com/company/eagle-mountain-mining-ltd/
Page 6 of 12
JORC Code, 2012 Edition – Table 1
Section 1 Sampling Techniques and Data
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Sampling | • Nature and quality of sampling (eg cut channels, random chips, or | •Diamond drilling. Nominal sampling interval of 3m adjusted as |
| techniques | specific specialised industry standard measurement tools appropriate | required for local geological conditions. Core was sawn and half-core |
| to the minerals under investigation, such as down hole gamma | was crushed, pulverised and split to produce a representative sample | |
| sondes, or handheld XRF instruments, etc). These examples should | for assaying. | |
| not be taken as limiting the broad meaning of sampling. | •Samples returning Cu ≥ 1% are reported in the announcement | |
| • Include reference to measures taken to ensure sample representivity | •Wider intercepts are reported using a 0.6% Cu cut-off | |
| and the appropriate calibration of any measurement tools or systems | •Intercepts are reported as weighted averages | |
| used. | ||
| • Aspects of the determination of mineralisation that are Material to the | ||
| Public Report. | ||
| • In cases where ‘industry standard’ work has been done this would be | ||
| relatively simple (eg ‘reverse circulation drilling was used to obtain 1 | ||
| m samples from which 3 kg was pulverised to produce a 30 g charge | ||
| for fire assay’). In other cases more explanation may be required, | ||
| such as where there is coarse gold that has inherent sampling | ||
| problems. Unusual commodities or mineralisation types (eg | ||
| submarine nodules) may warrant disclosure of detailed information. | ||
| Drilling | • Drill type (eg core, reverse circulation, open-hole hammer, rotary air | •Diamond drilling completed by Boart Longyear using an LF-90 drill |
| techniques | blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple | rig. |
| or standard tube, depth of diamond tails, face-sampling bit or other | •Core is HQ3 size. | |
| type, whether core is oriented and if so, by what method, etc). | •Downhole deviation surveys are performed every 30.5m (100 feet) | |
| •The core is oriented with a Boart Longyear TruecoreTMsystem to | ||
| allow measurement of structural information. | ||
| Drill sample | • Method of recording and assessing core and chip sample recoveries | •Core recoveries are recorded by the drillers at the rig and verified by |
| recovery | and results assessed. | Company’s personnel during core logging |
| • Measures taken to maximise sample recovery and ensure | •To maximise sample recovery and core quality drilling is performed | |
| representative nature of the samples. | with a “triple tube” set up where two splits are inserted in the barrel to | |
| • Whether a relationship exists between sample recovery and grade | minimize core displacement and core loss. | |
| and whether sample bias may have occurred due to preferential | •No relationship has been determined between sample recoveries and | |
| loss/gain of fine/coarse material. | grade. | |
| Logging | • Whether core and chip samples have been geologically and | •A quick log is completed on site and detailed logging is performed at |
| geotechnically logged to a level of detail to support appropriate | the Company’s facility in Tucson. | |
| Mineral Resource estimation, mining studies and metallurgical | •Logging is both qualitative and quantitative in nature. Portable XRF | |
| studies. | and magnetic susceptibility measurements are taken at regular | |
| • _Whether logging is qualitative or quantitative in nature. Core (or _ | intervals onthe core. |
Page 7 of 12
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| costean, channel, etc) photography. | •Core is photographed after mark-up, before sampling, wet and dry | |
| • The total length and percentage of the relevant intersections logged. | •100% of the relevant intersections is logged. | |
| Sub-sampling | • If core, whether cut or sawn and whether quarter, half or all core |
•The core is sawn in half by ALS Minerals at their Tucson facility. Half |
| techniques | taken. | of the core is bagged and sent for assaying while the other half is left |
| and sample | • If non-core, whether riffled, tube sampled, rotary split, etc and | in the core box for future reference. |
| preparation | whether sampled wet or dry. | •ALS Minerals conducted all preparation work: samples were weighed, |
| • For all sample types, the nature, quality and appropriateness of the | dried, crushed and crushed to better than 70% passing 2mm; sample | |
| sample preparation technique. | was split with a riffle splitter and a split of up to 250g pulverised to | |
| • Quality control procedures adopted for all sub-sampling stages to | better than 85% passing 75µm. | |
| maximise representivity of samples. | •Duplicates are used to assess the sampling representativeness. | |
| • Measures taken to ensure that the sampling is representative of the in | When duplicates are collected the core is quartered: one quarter is |
|
| situ material collected, including for instance results for field | sent to the laboratory as the primary sample, the other quarter is sent | |
| duplicate/second-half sampling. | to the laboratory as the duplicate and the remaining half of the core is | |
| • Whether sample sizes are appropriate to the grain size of the material | left in the box for future reference |
|
| being sampled. | •Sample sizes are considered appropriate to the grain size of the | |
| material being sampled | ||
| Quality of | • The nature, quality and appropriateness of the assaying and | •ALS Minerals assay methods: ME-MS61 (48 element four acid ICP- |
| assay data | laboratory procedures used and whether the technique is considered | MS), Hg-MS42 (trace Hg by ICP-MS) and Au-AA23 (Au 30g charge |
| and | partial or total. | Fire Assay with Atomic Absorption finish). The technique is |
| laboratory | • For geophysical tools, spectrometers, handheld XRF instruments, etc, | considered a near total digest of relevant minerals Above detection |
| tests | the parameters used in determining the analysis including instrument | samples are re-assayed with Au-GRA21, Ag-OG62, Cu-OG62, Pb- |
| make and model, reading times, calibrations factors applied and their | OG62, Zn-OG62 | |
| derivation, etc. | •Certified Reference Material (CRM), blanks and duplicates were | |
| • Nature of quality control procedures adopted (eg standards, blanks, | inserted/collected at a ratio of 1:10 with a minimum of 1 CRM per | |
| duplicates, external laboratory checks) and whether acceptable levels | assays batch. CRMs are inserted at intervals never exceeding 20 |
|
| of accuracy (ie lack of bias) and precision have been established. | samples. Acceptable levels of accuracy and precision have been | |
| established. | ||
| Verification of | • The verification of significant intersections by either independent or |
•Significant intersections have been verified by Company’s Principal |
| sampling and | alternative company personnel. | Geologist |
| assaying | • The use of twinned holes. | •No twinned holes reported |
| • Documentation of primary data, data entry procedures, data | •Logging and sampling data are collected using tablet computers and | |
| verification, data storage (physical and electronic) protocols. | Logchief software to ensure data integrity. The data is transferred | |
| • Discuss any adjustment to assay data. | weekly to the Datashed database after further data validation by the | |
| database manager | ||
| •No assay adjustment performed | ||
| Location of | • Accuracy and quality of surveys used to locate drill holes (collar and | •NAD83 Arizona State Plane Central (International feet). Data is |
| data points | down-hole surveys), trenches, mine workings and other locations | presented in NAD83 UTM Zone 12N (meters) |
| used in Mineral Resource estimation. | •National Elevation Dataset. Horizontal resolutionofapproximately |
Page 8 of 12
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| • Specification of the grid system used. | 10m and vertical resolution of 1m | |
| • Quality and adequacy of topographic control. | •Drill holes are located with a hand-held GPS with an estimated | |
| horizontal accuracy of ±5m | ||
| Data spacing | • Data spacing for reporting of Exploration Results. | •The data spacing of the new drilling results reported is insufficient to |
| and | • Whether the data spacing and distribution is sufficient to establish the | establish the degree of geological and grade continuity appropriate |
| distribution | degree of geological and grade continuity appropriate for the Mineral | for Mineral Resource estimation |
| Resource and Ore Reserve estimation procedure(s) and | ||
| classifications applied. | ||
| • _Whether sample compositing has been applied. _ | ||
| Orientation of | • Whether the orientation of sampling achieves unbiased sampling of | •The relationship between drilling orientation and orientation of key |
| data in | possible structures and the extent to which this is known, considering | mineralised structures is yet to be determined |
| relation to | the deposit type. | |
| geological | • If the relationship between the drilling orientation and the orientation | |
| structure | of key mineralised structures is considered to have introduced a | |
| sampling bias, this should be assessed and reported if material. | ||
| Sample | • The measures taken to ensure sample security. | •Core boxes are collected at the drill rig by Company personnel and |
| security | transported to the Tucson logging facility. After logging the core is | |
| delivered by Company personnel to ALS Minerals’ Tucson facilities | ||
| for cutting, sampling, sample preparation and assaying. | ||
| Audits or | • The results of any audits or reviews of sampling techniques and data. | •No audits or reviews of sampling techniques have been completed. |
| reviews |
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Mineral | • Type, reference name/number, location and ownership including | •The Oracle Ridge mine is located in the Marble Peak area, |
| tenement and | agreements or material issues with third parties such as joint |
approximately 30 kilometres by air northeast of Tucson, Arizona, |
| land tenure | ventures, partnerships, overriding royalties, native title interests, | U.S.A. It is located in Sections 17, 18, 19 and 20 of Township 11 |
| status | historical sites, wilderness or national park and environmental | South, Range 16 East, Gila and Salt River Base and Meridian of the |
| settings. | U.S. cadastral system. The geographical coordinates are | |
| • The security of the tenure held at the time of reporting along with any | approximately Latitude 32º28' North, Longitude 110º41' West. | |
| known impediments to obtaining a licence to operate in the area. | •The Oracle Ridge mine is 100% owned by Wedgetail Operations, an | |
| Arizona limited liability corporation controlled by Eagle Mountain | ||
| Mining Ltd and its subsidiaries (80%) and Vincere Resource Holdings | ||
| LLC (20%) | ||
| •The project consists of 57 patented mining claims covering | ||
| approximately 364 hectares,143hectares ofprivateland and405 |
Page 9 of 12
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| hectares of unpatented claims. The project has been recently | ||
| expanded with the staking of 105 unpatented mining claims over two | ||
| prospects named OREX and Red Hawk | ||
| •In 2009, the surface rights for the area necessary for potential mining | ||
| access (e.g. portals), processing facilities and offices have been | ||
| secured by an industrial property lease. Under the agreement, | ||
| Wedgetail Operations LLC leases the surface rights to the project for | ||
| the purpose of carrying out its exploration, potential development and | ||
| mining. The lease has an initial term of three years and is renewable | ||
| for nine additional extensions of three years each. | ||
| •A separate surface access agreement is in place to allow access to | ||
| drill sites and drill pads construction | ||
| •100% of the mineral rights are owned by Wedgetail Operations LLC | ||
| •There is a 3% net smelter returns royalty on the future sale of any | ||
| metals and minerals derived from the project. | ||
| •The land tenure is secure at the time of reporting and there are no | ||
| known impediments to obtaining permits to operate in the area. | ||
| Exploration | • Acknowledgment and appraisal of exploration by other parties. | •The Oracle Ridge Mining District was discovered in 1873. In 1881, an |
| done by other | 18 tonne per day copper smelter was erected at nearby Apache | |
| parties | Camp. The ore for this smelter was supplied from the Hartman, | |
| Homestake, Leatherwood, Stratton, Geesman and other small mines | ||
| in the area. | ||
| •Phelps Dodge Copper Company (Phelps Dodge) entered the District | ||
| in 1910 and undertook considerable development and exploration | ||
| work. | ||
| •Continental Copper, Inc began exploring in the District in the 1950s. | ||
| Continental leased the property in 1968 with an option to purchase | ||
| and undertook a large exploration and development program. This | ||
| was the first time there was a large scale assessment of the | ||
| mineralisation. | ||
| •Union Miniere began a new exploration program in April 1980. In | ||
| 1984, a feasibility study for an 1,814 short ton per day operation was | ||
| completed. | ||
| •In October 1988, South Atlantic Ventures acquired Union Miniere's | ||
| interest and entered into a 70-30 partnership with Continental to | ||
| develop the mine. Minproc Engineers Inc. was contracted to | ||
| supervise the confirmatory metallurgical test work. A detailed design | ||
| was started in November 1989 on a column flotation plant. | ||
| Construction of the facility commenced in April 1990 and the first ore | ||
| was processed throughthe plant on March3,1991. The capacity of |
Page 10 of 12
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| the mill was initially set at 771 short ton per day. The mill capacity | ||
| was later expanded to approximately 1,000 short ton per day. | ||
| •The mine closed in 1996. Production records show that approximately | ||
| 1,200,000 short ton were milled since commencement of operation. | ||
| •Between 2009 and 2015 the project was owned by Oracle Ridge | ||
| Mining, a TSX-V listed company, which drilled approximately 130 | ||
| surface and underground holes | ||
| Geology | • Deposit type, geological setting and style of mineralisation. | •The deposit is classified as copper dominated skarn. Minerals |
| representative of both prograde and retrograde skarn development | ||
| are present, the former being represented by diopside and garnets, | ||
| the later by epidote, magnetite and chlorite. | ||
| •Copper dominated mineralisation generally contain chalcopyrite and | ||
| bornite. The deposits are most commonly associated with Andean- | ||
| type plutons intruded in older continental-margin carbonate | ||
| sequences. The associated intrusive rocks are commonly porphyritic | ||
| stocks, dikes and breccia pipes of quartz diorite, granodiorite, monzo- | ||
| granite and tonalite composition, intruding carbonate rocks, | ||
| calcareous-volcanic or tuffaceous rocks. The deposits shapes vary | ||
| from stratiform and tabular to vertical pipes, narrow lenses, and | ||
| irregular zones that are controlled by intrusive contacts. | ||
| •The copper rich skarn deposits at Oracle Ridge are found in | ||
| conformable lens along the contact with the Leatherwood | ||
| Granodiorite or associated with faults and shear zones which | ||
| intersect the Leatherwood. These have acted as feeders into the | ||
| reactive carbonate horizons. The later can form a “Christmas Tree” | ||
| type shape. | ||
| Drill hole | • A summary of all information material to the understanding of the | •See body of announcement |
| Information | exploration 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. |
Page 11 of 12
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Data | • In reporting Exploration Results, weighting averaging techniques, | •Exploration results are reported as weighted averages of samples |
| aggregation | maximum and/or minimum grade truncations (eg cutting of high | with Cu≥1%. If a up to two samples with Cu<1% are shouldered by |
| methods | grades) and cut-off grades are usually Material and should be stated. | samples with Cu≥1%, the former samples are included in the |
| • Where aggregate intercepts incorporate short lengths of high grade | weighted average calculations. | |
| results and longer lengths of low grade results, the procedure used | •The broader intersection of 44.93m @ 1.33% Cu is reported using a | |
| for such aggregation should be stated and some typical examples of | 0.6% Cu cut-off and includes lower grade mineralisation in the | |
| such aggregations should be shown in detail. | weighted average | |
| • The assumptions used for any reporting of metal equivalent values | •No metal equivalents reported | |
| _should be clearly stated. _ | ||
| Relationship | • These relationships are particularly important in the reporting of | •All intervals reported are down hole length. True widths are not |
| between | Exploration Results. | known at this stage. |
| mineralisation | • If the geometry of the mineralisation with respect to the drill hole |
|
| widths and | angle is known, its nature should be reported. | |
| intercept | • If it is not known and only the down hole lengths are reported, there | |
| lengths | should be a clear statement to this effect (eg ‘down hole length, true | |
| _width not known’). _ | ||
| Diagrams | • Appropriate maps and sections (with scales) and tabulations of | •See body of announcement |
| 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 | • Where comprehensive reporting of all Exploration Results is not | •All exploration results obtained so far have been reported. |
| reporting | practicable, representative reporting of both low and high grades | |
| and/or widths should be practiced to avoid misleading reporting of | ||
| _Exploration Results. _ | ||
| Other | • Other exploration data, if meaningful and material, should be reported | •No other meaningful and material exploration data beyond this and |
| substantive | including (but not limited to): geological observations; geophysical | previous ASX announcements by the Company |
| exploration | survey results; geochemical survey results; bulk samples – size and | |
| data | 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 work (eg tests for lateral | •Further work will include interpretation of logging and assay results |
| extensions or depth extensions or large-scale step-out drilling). | when they become available. Additional drill holes will be completed | |
| • Diagrams clearly highlighting the areas of possible extensions, | at Oracle Ridge in the coming weeks. | |
| including the main geological interpretations and future drilling areas, | ||
| _provided this information is not commercially sensitive. _ |
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